Tonight and tomorrow, there are two major documentaries on Watergate – tomorrow’s MSNBC special on All the President’s Men, and tonight’s two-hour ABC special on the scandal, and the hearings, from Richard Nixon and his cronies in the Seventies. Why is this famous political crisis about bungled White House cover-ups and presidential abuse of power worth watching in 2017? And why, oh why, do I ask so many rhetorical questions?