Apparently a bunch of young men were aboard a New York subway and were randomly yelling "Merry Christmas." (This is a conjecture, but as it says it was "late," I think we may infer that they'd imbibed liquid refreshment and were becoming not only boisterous but also belligerent.) Also on the train were a group of young Jewish girls and guys, who began calling back "Happy Hannukah" to them.
What happened next is a bit unclear (to me, anyway), but evidently the Christmas-shouting thugs became angry and began behaving threateningly to at least one of the Jewish girls. Whereupon a bystander, a 5' 7", 140 lb. Muslim Bangladeshi waiter named Hassan Askari, pushed one of the young Cossacks away from the Jewish girl (why didn't her escort do this first?), and got himself a couple of black eyes and a swollen face for his pains.
There's no word here on what happened to the thugs, whether they ended up in custody, whether they will be charged, or exactly how the whole thing ended without more serious injuries. We learn only that one of the young Jewish men pulled the emergency cord and thus alerted the powers that be to trouble on the train, which presumably had something to do with the breakup of the whole thing.
Confoundment to those who take the name of Our Lord and the feast of His birth in vain. And honor where it's due. To Hassan Askari: May he someday come to know Jesus Christ and learn the true meaning of "Merry Christmas."