Tamil Nadu has just seen its latest political twist. More than half of the AIADMK’s 47 MLAs defied the party whip to help Chief Minister C Joseph Vijay’s Tamilaga Vettri Kazhagam (TVK)-led coalition sail through the Assembly floor test on Wednesday.The rebel faction has solidified a split in the AIADMK, which is now staring at an erosion of its relevance amid the rise of the TVK.Splits, however, are nothing new for the Dravidian parties that have dominated Tamil Nadu’s politics for almost 60 years now.What’s crucial is that none of the splits appears to have diluted their “Dravidian ideology”. So ingrained is this ideology in the state’s psyche that it will endure even with the TVK in power, says veteran Chennai-based journalist Kalyan Arun, who teaches at the Asian College of Journalism.Indeed, Vijay has invoked Periyar as his guiding light and spoken of inaugurating a “new era of real, secular social justice”, signalling continuity with the state’s long social justice tradition.Here’s a look at the journey of the Dravidian movement in the state, from its origins as a social force to a political identity carried and moulded by multiple parties.Dravidian movementThe institutional basis of the Dravidian movement was laid in 1916 with the formation of the Justice Party. It comprised members of the non-Brahmin elite, merchants, landlords and professionals who were looking to politically counter Brahmin dominance in government jobs and the public sphere.Story continues below this adIn 1925, E V Ramasamy Naicker — a former Congressman who would later come to be known as Periyar (great man) — formed the Self-Respect Movement that stood for anti-caste politics, rationalism, social reforms and women’s rights. Periyar was also known for his uncompromising atheism.The Self-Respect Movement also increasingly emphasised Tamil identity, calling the language and culture distinct from Sanskritic North Indian traditions.Also Read | Congress leaves DMK for TVK: Why this post-poll break-up is a first in their decades-old allianceIn 1944, the Justice Party and the Self-Respect Association merged to form the Dravidar Kazhagam (DK). The DK was anti-Brahmin, anti-Congress and anti-Aryan, espousing an independent Dravida Nadu comprising Tamil, Malayalam, Telugu and Kannada speakers.C N Annadurai, or Anna (elder brother), emerged as a key figure of the DK, which also attracted youngsters such as M Karunanidhi.The DK splitsStory continues below this adIt would not take long for differences to emerge between Periyar and Annadurai, who found the DK patriarch’s ways overbearing.Periyar, an admirer of British rule, called independence a “day of mourning” as he felt power would pass into the hands of North Indians, says veteran journalist Vaasanthi in her book Karunanidhi: The Definitive Biography. Annadurai, however, felt that the day needed to be celebrated as it marked the end of foreign domination.Periyar also believed in keeping the DK away from direct politics and elections. Annadurai and others disagreed.Another point of friction was that 72-year-old Periyar, according to Vaasanthi’s book, married his 31-year-old assistant Maniyammai. Apart from the age difference, many younger DK members were unhappy that Periyar had named her his legal heir and placed the DK’s funds in her hands.Story continues below this adSo on September 17, 1949, five years after the DK’s formation, Annadurai broke away to form the Dravida Munnetra Kazhagam (DMK). Like the DK, it positioned itself against theistic practices and grounded its politics in language, social justice, caste equality, anti-Brahminism and a separate nation-state.But the DMK would also break with Periyar’s atheistic line, writes Vaasanthi, instead focusing on “one community, one god”. The mellowing would happen in other ways as well — with the Sino-India war of 1962, Annadurai gave up his secessionist demands, too.A turning point for DMK: Opposition to HindiIn March 1938, C Rajagopalachari, the Premier of Madras Presidency, introduced a policy to teach Hindi in classes 6, 7 and 8. While students were not to be held back for failing in Hindi, attendance was compulsory. The British withdrew the policy a year later amid a backlash by Periyar’s followers.Also in Explained | Before Vijay, there was Rajaji: Recalling independent India’s first hung Assembly in Madras stateIn 1950, the state’s Congress government again introduced a Hindi policy, making the language compulsory from classes 1 to 6. After a massive DMK agitation, the government made Hindi optional.Story continues below this adThe DMK did not contest the first Assembly election in Madras State, held in 1952. In 1957, however, it won 15 Assembly and two Lok Sabha seats. Annadurai became the Leader of the Opposition. In 1962, it won 50 seats in the Assembly and seven in the Lok Sabha.Then came the turning point — the massive anti-Hindi agitations in the state in 1965.The protests stemmed from a 1949 Constituent Assembly decision that chose Hindi as the official language of the Union, with English to continue alongside it for 15 years — until January 26, 1965.Amid fears that Hindi would dominate official communication, violent protests broke out in Madras State — marked by self-immolations, killings of policemen and multiple deaths in police firing.Story continues below this adThis forced Prime Minister Lal Bahadur Shastri to assure the state that Hindi would not be imposed upon it.However, the anger sealed the Congress’s fate in the state. In the 1967 elections, buoyed by the anti-Hindi agitation and rise in the price of rice, the DMK won 138 Assembly seats, securing a majority. Annadurai became chief minister. A two-language formula — English and Tamil — replaced the Centre’s three-language formula. And Madras was renamed as Tamil Nadu, the land of the Tamils.The DMK splitsAfter Annadurai’s death in 1969, Karunanidhi took over as Chief Minister, with the support of Tamil film superstar M G Ramachandran (MGR), an old friend and DMK leader.But the popularity of MGR, who would steal the show in public appearances, rankled Karunanidhi, says Vaasanthi in her book. After the DMK won the 1971 elections, Karunanidhi thwarted MGR’s aspirations to become a cabinet minister. The chief minister also unsuccessfully attempted to launch his eldest son, M K Muthu, into films to counter MGR.Story continues below this adWhile all this soured their relations, it was the Union government that played a significant part in engineering the final split. The CBI and the ED initiated raids on MGR’s properties, rattling him. MGR met Prime Minister Indira Gandhi and returned a transformed man, openly accusing DMK leaders of corruption, Vaasanthi recalls in her book. The DMK expelled MGR on October 10, 1972. A week later, on October 18, MGR founded his own party — the Anna Dravida Munnetra Kazhagam, or ADMK, named after Annadurai. It would be known by this name until September 1976, when the words ‘All India’ were prefixed to it.DMK vs ADMKKarunanidhi tried to undermine MGR as a Malayali, but his popularity remained undented. MSS Pandian argued in his book, The Image Trap, that MGR’s screen image — the underdog who rises to power and delivers justice — became a propeller for his politics, despite the fact that he pursued no radical economic measures for the poor.MGR, however, took care to indulge in visible philanthropy. His fan clubs also engaged in civic activities — thus marrying the reel image to the real image.ALSO READ | MGR: The man who made cult worship the theme of Tamil Nadu politicsStory continues below this adIn November 1972, MGR went to New Delhi and presented a memorandum to the President, seeking an inquiry into the entire Tamil Nadu Cabinet for corruption. The DMK government tried to contain the damage by passing a Bill to punish the corrupt, covering even the chief minister.What made things worse for the DMK was its opposition to the Emergency and Karunanidhi’s good terms with Indira’s arch-rival Jayaprakash Narayan.The Centre asked Tamil Nadu Governor KK Shah to examine MGR’s charges against the DMK. His report accused the DMK government of corruption, and flagged its autonomy demands and aggressive speeches. The DMK government was dismissed in January 1976. Karunanidhi’s son MK Stalin and nephew Murasoli Maran were jailed under the Maintenance of Internal Security Act, or MISA.A commission led by Justice Ranjit Singh Sarkaria also published a damning report on corruption allegations against the DMK government ahead of the 1977 Assembly elections.Sure enough, MGR swept to power. However, Indira Gandhi dismissed the AIADMK government in 1980 after he backed Chaudhary Charan Singh’s bid for prime ministership. And the Congress, in an unlikely reversal, aligned with the DMK. But when elections were held later that year, the AIADMK again swept to power. MGR remained chief minister until his death in 1987.The AIADMK splitsAfter MGR’s death, the AIADMK first split into factions led by his wife, Janaki, and his favourite lieutenant, film star J Jayalalithaa. The Governor invited Janaki to the floor test, but the violence that erupted between the two factions in the House forced its sine die adjournment and the imposition of President’s Rule. The DMK won the 1989 elections, but the Jayalalithaa faction, which came in second with 27 seats, became the real AIADMK.NewsletterFollow our daily newsletter so you never miss anything important. On Wednesday, we answer readers' questions.SubscribeFrom here began the epic rivalry between Karunanidhi and Jayalalithaa. The two parties infamously clashed in the Assembly when Karunanidhi was to present the budget of 1989, with DMK members allegedly assaulting Jayalalithaa.With Sri Lankan militant Tamil factions becoming active in the state in the late 1980s because of the alleged tacit backing of the Dravidian parties, the DMK government was dismissed early in 1991. Months later, Rajiv Gandhi was assassinated in Sriperumbudur amid the 1991 polls. The assassination swung the elections, with the state handing a victory to the Congress in Lok Sabha and Jayalalithaa in the state Assembly.After this, the two rival Dravidian parties would take turns to rule the state for more than two decades.This changed when Chief Minister Jayalalithaa died in December 2016. The AIADMK first split between factions led by O Panneerselvam (OPS) and Edappadi K Palaniswami (EPS). They merged again in 2017 with both serving as chief ministers till 2021, but only for OPS to be ousted after a power struggle with EPS in 2022. In 2018, TTV Dhinakaran formed a breakaway faction, the AMMK.The DMK, too, saw another split in 1994, after an Intelligence Bureau report said the LTTE was planning to assassinate Karunanidhi to ensure Vaiko’s elevation. Expelled from the party, Vaiko founded the Marumalarchi Dravida Munnetra Kazhagam.In 2018, Karunanidhi died and, in 2021, the DMK came to power with Stalin as chief minister.Now, the TVK’s rise has pushed both Dravidian giants into the same Opposition corner. Stalin’s son, Udhayanidhi, is the Leader of Opposition. And a post-Jayalalithaa AIADMK, under the shadow of the BJP, faces questions over its future. But Vijay’s signal of continuity with the state’s long social justice tradition means that its Dravidian politics may not be over yet.