To white people, in my experience . Or not so much white people in general, since I can be considered white - but to the indigenous population of the country the arabs have migrated to. But it's ok, I'm not down with that many danes either
van Persie often raises his hands like that when he celebrates to brush off his shoulder or give a "kiss" to the fans, but I don't think he had any intentions making a Nazi salute whatsoever even if it might looked like one.