It's not a matter of 'winning', it's how they do their job...The police can't win no matter what they do.
If they stop and search they will be called racist.
If they don't stop and search they will be accused of not doing their job when people start to ask why so many young black men are dying.
A tricky one, but not helped by the institutional racism that exists in that organisation...
An attitude that also sadly exists in some less enlightened sections of the UK population and thus from which they recruit!