One of the downsides of being famous is that folks pay far more attention to you than they should. American celebrities are constantly under surveillance, and every word they say is subject to scrutiny. So be careful what you wish for if you desire fame. No human being should be a goldfish. That being said, some celebrities simply cannot keep their mouths shut, weighing in on topics they know little or nothing about. And when that happens, the famous person often undergoes even more scrutiny. You may remember that in the wake of the Newtown, Conn., shootings, comedian-actor Jim Carrey...