ah what can you do...*shake his head* what can u do? what message does flag burning actually give? OH wow look! freedom of speech! yes, yes, public onlookers can see that, but is it necessarily to have to go around burning flags to demonstrate your PRIVELIGED right to freedom of speech? if you really do hate the government, speak or write to your local MP about it, or submit an article for the 'opinions' column in major newspapers.
oh, as a side note, SOME people - and i only say SOME people - classify flag burning as arson, and could probably take you to court on the case of public nuisance.
now, the final message: if you really want to burn a flag, do it in ur own private place. YOUR FREEDOM OF SPEECH IS STILL UPHELD AND EXERCISED.