you don't need Nazis, Greek or otherwise, to shoot rappers

Except in Greece a rapper, Killah P, has just been murdered by a member of the neo-Nazi Golden Dawn.

Can't say much about speed metal, but the other two forms you single out, rap and punk, are riddled with examples of radical politics. If your views about rap are solely based on what you son plays, do you not think that reflects more on the sort of rap he likes than the genre as a whole?

The Goats - Burn the Flag

The Disposable Heroes of Hiphoprisy - Television, the Drug of the Nation