""And as for "If a cop talks to you as though you might be a threat - it's probably 'cos he's met someone like you that was a threat" - a pretty classic definition of prejudice.""

As a lawyer, whose stock in trade is, or should be the correct use of words, you really need to check up and learn the difference between "CAUTION" (for self preservation) and "PREJUDICE".

An unarmed police officer who wishes to live out his natural lifespan had damn well better treat everybody as a potential threat.

That is "EVERYBODY" Richard, so perhaps you would like to explain where exactly that is prejudice?

Don T.