He was Vincent Van Gogh’s grandson. He had just produced a very controversial film about domestic violence against women in Islamic culture. It pissed off a lot of Dutch Muslims.
Ironically he had just produced a documentary about the assassination of Pim Fortuyn, also famous/infamous for criticizing sexual injustices of Islam. (According to Adam Curry, Fortuyn has been portrayed in the American media as a racist ideologue along the lines of Jacques Le Pen, but this is not true; he was openly gay and a critic of the sexual intolerance of Muslim culture.)