Ok, non-white writing here. I've never been stopped and frisked and neither have most of my non-white friends. And it certainly doesn't happen "all the time", at least to me in my part of town. Although anecdotal, admittedly.
I'm just reminded of a story shared in New York in the 80's where a teacher asked his mostly 14-15 year old African American class if they had been stopped and frisked and every single one of them held their hand up.