Jews and Arabs are desert species and adapted for that environment. Surviving by scavenging amongst the sand and rocks. As pointed out previously they have a tendency to be parasitic by nature because nature did not provide much for them.
Europeans developed by inhabiting the lush forests, plains, seas and hunting grounds of Europe and are not petty scavengers in the same way as Desert dwellers. Nature provided a more favorable habitat for the white European to be nurtured. I see no reason for us to give an inch to the desert tribes and that is about as scientific as I can be. However I understand we need to wage war on all fronts to retain our lands and protect our folk.