Most people's experience with the police isn't some sort of rose-faced "Dixon of Dock Green" type who goes around cuffing someone on the shoulder for nicking a rosy apple or something right. Their experience of the cops is: They ride around in riot vans all day(they can't walk anywhere. If they're so popular how come they can't wlak around on their own anymore?) They turn up five days after your house has been burgled and say they can't do nothin' about it right. They kick shit out of you up in a magistrates court on a Monday - that's the reality of the cops.
Sure, you know when the Nazis are marching, when they're out there, yeah, go and give them a fuckin' kickin' 'cos tha's all they can understand, that's the only way to deal with them. There is no other way, to be sure.