I'm with Martin on this one.

If someone (usually white middle class) chooses to be offended (often on behalf of others) by what I do then frankly I don't give damn. They should grow up and get over themselves.

If an ethnic minority (who probably has more right to do so) takes offence at what I do, well being offended ain't going to kill you now is it?

In a free society one can do what one likes within the law.