I had an acquaintance who lived in Japan for a while, back in the late 80s. She had an extremely low opinion of what she described as "a large percentage" of Japanese men. She said that she was regularly told by men she met there that all American women are whores, and was once assaulted on her way home from buying groceries. She whacked the guy in the head with a can of food and he ran off. Never having been to Japan, I can't say I have any idea how accurate her impressions were.