Did I ever say that certain groups did not commit more crimes? No, I did not. Deal with it.
What I said is that how would one implement a policy for "stop and frisk" procedures. Second, does "stop and frisk" even reduce crime? Is there any evidence to suggest this? I am well aware that certain groups commit more crime than other groups. The question is how to reduce that statistic.
OK you said this
The issue is that just because someone may look like a thug it does not mean they are. I mean, where do you draw the line? Its unreasonable to frisk everyone who looks like they would commit a crime.
It is unreasonable to assume they all are going to be criminals, yes, but from looking at someone in a given context you can make an informed decision that they are far more likely to be a criminal than another grouping.
If there is a 5% crime rate among the average population but a 40% crime rate in a specific grouping (it is close to this for travellers and that is underestimating it) you have to focus more attention on these people when you see them. Whether that means following them with a cctv camera, stopping and searching them or whatever, it is a logical action based on experience and statistical probability.
Whether or not it reduces crime is debatable. Crime is a way of life for some people. Travellers have a nomadic existence and are peripheral to normal society so they live by different rules. That may sound ridiculous/outrageous but fighting for money, theft, welfare fraud, organised theft are all widespread with travellers. I mean there are Irish travellers famous for stealing rhino horns around the world and selling to Chinese underground just as they steal copper wires and scrap metal here.
If you had a shop and they came in you'd watch them more than the sweet old lady wheeling around her bag.