I have seen that too. My Grandfather fought in the South Pacific in WW II and in the mid-eighties I bought a Toyota Celica GT. My Grandfather refused to ever ride in it. He didn't turn it into a crusade by ragging about it all the time, but he insisted on driving if we went anywhere and he always told me why.
My mother, who was a teen during the WW II years, admitted decades after the war that she had trouble relating to Japanese people. She was never rude to them, she just said she felt funny about them and preferred not to associate with them. Said it was because of so many of her classmates and neighbors dying in the war.