Each morning, people in Thailand wake up to the latest viral videos on social media of drunken punch-ups, thefts, scams or acts of public indecency committed by some foreign tourists.After months of warnings, Thailand on May 19 announced the cancellation of its 60-day visa-free entry rules for 93 countries and territories in a bid to curb crime, antisocial behaviour and abuse of the visa privilege by a portion of the tens of millions of tourists who have visited the kingdom annually.Visitors...