Jajas No one said it was ok for you to have been bullied for your accent or perceived poshness. I was also bullied at school because people thought I was posh and because we lived in a big house (and because we were English - we lived in Scotland at the time).
I think what was being said was a fairly valid point about class-bashing. if I play devil's advocate for a minute here:
Calling someone a Chav is a derogatory way of referring to someone of low class isn't it. Chav characterises people from a poor background, perhaps with low education, and diminished opportunity, as (often) ugly, stupid, unhealthy, knuckle-dragging, feckless, feeble-minded creatures. The media have jumped on this word, using it to demonise a large swathe of society. It's divisive and pretty unfair. I guess in a similar vein, Toff, is a pretty horrible word for upper-class people. The only difference being that upper-class people come from a position of privilege, with boundless educational and social opportunity, and power (therefore fair game 
)
Let's replace the word "chav" in thread title, with the phrase "low-class" or "oik", or "plebeian", because really that's what we're all (more or less) desperately trying to avoid - giving our children names that will make people think we're low-class. Isn't it? Chav is a word we all use to pretend we're not talking about class. Chav, increasingly, is a word we all use to pretend we're not even talking about other human beings.
When I was growing up my mum didn't allow me to wear a leather jacket or chew gum because it was "common". Chav wasn't invented then.