Ignore the father, he is entitled to his opinions, if you tune him out he will temper them around you.  We all have relatives that we arent crazy about, he sounds harmless. He might even have his reasons, I recall a man I knew who was imprisoned by the Japanese in WW2 and hated them. The Japanese act more civilized today, but his breaks and physical torture were real.  He was a very fine caring man.  FWIW Ive also met Christians who have been forced out of the mideast who are not fond of Muslims and of course who doesnt know people who hate people from Israel often for no reason..