from a post I saw on another board:

You are walking down a street in Israel on a warm summer's day, when you see a man wearing a heavy coat. His mid-section is bulging, and he looks like an Arab. You wonder if the man has explosives strapped to his chest. What do you do?

a. Nothing. You don't believe in racial profiling.
b. Run like the wind, and call the cops the moment you catch your breath.
The correct answer is b. If you answered a, you will be named humanitarian of the year, but the prize will be awarded posthumously. (This question is based on a real incident that occurred this year in Israel. In that case several racists did their own profiling and decided to call the cops. Unfortunately, the police didn't arrive in time to prevent the man from blowing himself up, taking about five civilians with him.)

Its nice to have pie-in-the sky principles but until you know of a better way to stop these animals....