Please know that when I say chav, I'm not saying it in a derogatory way, I mean it in the same way I mean "goth", "punk", etc and I come from both the same background and same town as them. The nicest interactions I've ever had with strangers all involved people you'd "chavs". When I was in school one of them defended me from bullies, and after that, whenever we crossed paths in the hallway he'd yell "saaafe man!" while reaching out to fist bump me.