Alright look, first off before I get crucified out of hand I want to point out that the practice WAS ruled Constitutional in the USA via
US v Armstrong. Nevertheless the practice remains illegal in most (if not all) jurisdictions.
My question is why? At least under certain circumstances, why would it be wrong to profile?
To be clear, I'm neither for nor against it.
On one hand, I think it's wrong to presume all members of a given race are criminals.
On the other hand, I think it's downright stupid to ignore the demographics of crime.
To be sure, there are white terrorists and criminals... but by and large the vast majority of terrorists are of Arab ethnicity, and most criminals in the US are black. So why do we think it makes sense, when trying to prevent crime, to treat all races as equally likely to offend?