President Donald J. Trump has been recently tweeting, accusing MSNBC talking head Joe Scarborough of murder. It is pretty childish and churlish and a lot of other stuff in between. If I were Joe Scarborough, I would tweet back stuff like “So Jeffrey Epstein was recruiting under age girls at Mar-a-Lago” or “How much did you overpay for the mob tied concrete you bought for Trump plaza?” Or “So you slept with Marla Maples before you got a divorce from Ivana?” So many cheap shots Joe Scarborough could lobby right back atcha. But he doesn’t. Because even if there’s truth in them, they are low blows.