Clearly you've never called the cops because a bunch of strangers are lurking around your neighbors property when there have been many thefts in the area, only to tell you unless they are acutally walking around with stolen things they aren't coming.
A double edged sword
You don't know what they were doing and if per chance they were just hanging around and they got arrested and you'd hear about it you'd say "dirty cops arrested someone for no good reason, those kids were just hanging around the neighborhood doing nothing wrong"
Or singled out someone from your group of friends, who was being completely cooperative and throwing them around because they happen to be native.
Oh trust me I've been singled out many times by cops but I know how to avoid being thrown around because I don't allow myself to be in that situation
I've also had friends in that situation where they've been singled out but they know to avoid being thrown around as well
And hopefully I'm never in the situation where they are able to throw me or a friend around
And again I'm not arguing "all cops are good" I'm arguing not all cops are bad as many people in this thread are insinuating
I don't work in absolutes because it's a mistake to do so