Jonathan Chait writes that the raid on a Washington Post reporter’s home is deeply troubling.“The question that has hung over the Post since Bezos’s heel turn has been whether he is still willing to protect the paper from a president who yearns to subdue it. He could answer the question by speaking out forcefully in defense of his journalists and their right to report on the government without intimidation. Or he could continue to remain silent, which, in its own way, is also an answer.”