Oh please, some people are quite obviously members of gangs.
We don't risk any rights empowering the police. We never had a right to privacy and "privacy" on public property is nonexistent.
Trust me, if I could arrest them and pick them off myself I would, but I do not trust giving that kind of power to the police across the states. It will make it too easy for them to just label anyone they want as a gang member.
Except those are immoral and wrong.
Mainly prostitution, not so much drugs.
Well that's one way gangs are able to maintain themselves.
Policemen, just like gangsters, are people capable of breaking the law. You cannot empower one and expect to banish the other.
The only way to get rid of gangs is to prevent people from joining them.