ultimately, the point is, "profiling" is something all living creatures do. Animals that have been abused will often become shy or very aggressive when people are around them, based on how people treated them.
as humans, we discriminate in everything we do, from the foods we eat to the people we choose to associate with to music we like to hear.
It's not so much that we are profiling, it's what we do about it that becomes the issue.
if I am responsible for security at a birth control clinic and I know that white males between the ages of 17 and 50 are the most recognized as shooters of doctors in those places, I will step up my scrutiny when I see one in the area. I may not arrest them or cuss them out or give them the evil eye, but I most certainly will err on the side of caution.
If I am responsible for security at an airline and I know that arabic looking men between ages 17 and 50 are highly recognized as attacking airlines, I will most certainly pay more attention to them when I see someone fitting the description. However, again, I will not arrest them or give them the evil eye , etc.. I will, though, err on the side of caution.
If every time I see a politician, I get the feeling I am being lied to, I am very likely to be distrustful of anything a politician says to me and check out what they told me somewhere I think is believable before I accept it as truth.
Fool me once, shame on you. Fool me twice, shame on me.
I should've been watching for you the second time.