Actually, profiling occurs right now, whether you know it or not. However, what some people here want is to only search people who fit their amateur notion of what a profile is, and let everyone else go through unchecked. That would be such a massive invitation to an attack that it wouldn’t even be funny.
Profiling occurs right now because profiling is convention. Fifty years ago, we profiled unhampered by political correctness and the result was a very good balance between security and liberty.
The fact that terrorism has increased in our day should be a clue to us that we need to do what has always worked. The problem is that amateurs today (not including useful idiots) have more common sense than professionals. You would know this if you ever paid attention to the ridiculous behavior of TSA officials.
But political correctness is the opiate of the masses (the useful idiot masses). They suck it down like honey, never once tasting its poison.