“Bring a halt to all business being done in the name of this potential felony suspect, Donald J. Trump.” Filmmaker Michael Moore on Wednesday urged the Democratic Party to declare a national emergency after the FBI said it was investigating whether members of Donald Trump’s campaign team had worked with the Russian government to influence the outcome of the 2016 election. Of course, Moore made his point in a most engaging way on Instagram, using a red light — specifically, that of sentient computer HAL 9000 from “2001: A Space Odyssey” — to call on Democratic leaders to respond with...