For example, on the New York subway, some people got the crap beaten out of them for responding to a "Merry Christmas" with "Happy Hanukkah." According to the CNN article:
Two women who were with a group of 10 rowdy people then began to verbally assault Adler's companions with anti-Semitic language, Hellerstein said.
One member of the group allegedly yelled, "Oh, Hanukkah. That's the day that the Jews killed Jesus," she said.
When Adler tried to intercede, a male member of the group punched him, she said.
No, you idiot, Hanukkah is something completely different -- and, according to Slate, totally misunderstood. But I digress.
For the record, Jews don't celebrate the birth or death of Jesus -- except to the extent you're talking about Jews for Jesus, who are not really Jews. Plus, you have the seasons all wrong -- the Jews purportedly killed Jesus on Good Friday, and he was resurrected two days later, on Easter. You know, in the spring. Heck, I'm a Jew and I know that much.
So, maybe you should like learn your own religion before you go making uninformed comments about others. Or at least watch the Mel Gibson movie.