Probable cause should include things like wearing gang colors, running for no apparent reason when police approach, sneaking around in the shadows as if setting an ambush...
Typical criminal behavior.
Oh, and wearing hoodies with hood up when it is 80 degrees.
These things already ARE considered probable cause. Gang affiliation..bloods, Crypts, Banditos, Hells Angels, MS-13 and the like are considered organized criminal enterprises prosecutable under RICO.
This is not what they are referring to when they speak of “stop and frisk”. They are referring to a program that looks the other way when officers see someone (white/black/Asian/messy-can) walking down the street at 10pm and they want to shake the guy down.