. >> reporter: keyshan harley has never been in legal trouble, but he says police have stopped him more than 100 times. >> i first got stopped and frisked when i was 13. they said i fit a description. i would say nine times out of ten that's the excuse they give me. what's the description? young, black male, 18 to 25. >> reporter: he's 19 years old and lives in the same community where lieutenant mccall leads patrols. >> i've been stopped over a hundred times. it does all blur together at some point, but there are those extreme instances where it's kind of hard to forget. >> reporter: keyshan is a sophomore in college. he lives with his mother, sophia. >> i was coming home from school, the cop slams me against the wall, throws stuff out of my bag, calls me derogatory terms like [ bleep ], [ bleep ]. he doesn't even let me pull out my wallet to show him who i am, show him i go to this school right here. it messes with you psychologically, it messes with you emotionally. it's scary. >> it was becoming too much where he's coming home not wanting to go to school. i worked so hard to make su