Vice President Mike Pence was roundly ridiculed when it was revealed that he makes an effort never to be alone with a woman who is not his wife, but the policy is looking less prudish and more sensible as accusations of sexual misconduct against powerful men proliferate. Accusations first surfaced last month against movie mogul Harvey Weinstein and have since reverberated through Hollywood, the media and government at every level. On Wednesday, Matt Lauer, a longtime host of NBC’s “Today,” and Minnesota Public Radio’s Garrison Keillor were fired by their respective organizations amid accusations of improper behavior. Joseph Backholm, president...