Our current Murderer-in-Chief thinks that it's not only a good idea to hit your own kids, but it's a good idea to hit your neighbor's kids if you see them doing something wrong. And he finds it amusing.
I guess that's why it's so easy for O-bomb-a to order drone bombings against innocent civilians. (Recall this clip where we see him make a joke about drone bombing.) Once initiating violence is part of your worldview, the difference in hitting a defenseless child and murdering an innocent civilian becomes one of degree. (Here's an excellent book on corporal punishment called Spare the Child.)
[Thanks to Civilized Savage]