Whitewavemark2, I can see what you are getting at but there is a conflict here between the need to make sure that all people are treated fairly and equally by the police and how to deal with a serious type of crime that is more prevalent in one ethnic group than any other. This is why I asked you whether you have any ideas on how this conflict can be resolved.
We have already seen in Rochdale, Oxford and other cities the problems that arise when one crime, in this case the sexual exploitation of young girls, is more prevalent in one ethnic group, than others and the damage done to so many troubled children by the unwillingness of the police to investigate properly because of their fear of being accused of racism.
There is a real problem here and there is never the simple cause and effect in these problems that you seem to see. Yes, there is undoubtedly racism in the number of black youths/men stopped and searched but person on person knife crime is also highly prevalent in this group. What do you suggest could be done to bring together these conflicting problems.