somebody? >> no let's assume -- >> along with the other reasons. >> let's say they didn't see it ahead of time. it's in a crime-ridden area. >> known to police. >> it would have been a constitutional stop. >> let's make something clear. everybody is talking about probable cause. you don't need probable cause to make a stop. you need reasonable suspicion. you need probable cause to make an arrest. >> what is reasonable suspicion? let's back up. >> reasonable suspicion means like a drug-prone location known narcotics dealer. >> you look like you're doing something. >> and the police officers need to articulate this when they make stops. >> you know i was talking to laverne morris actor. he grew up on the south side of chicago. i was talking about, what did your mom tell you? a lot of these incidents we've been talking about in which these young men in most cases are running. he said to me you know what when i grew up i was taught to run away from police. that my likelihood of survival was better running that way than