Not racist, but if you're really picky, maybe religiously offending. Christmas is a Christian concept. If you're really devout, but in another religion, you may possibly take offence at receiving a greeting for something that doesn't fit into your belief system.
No, it is not racist to wish anyone a Merry Christmas. Although the PC (Politically Correct) Brigade would have it so, as it might just offend someone of a different religion to Christianity.
Just as in your question !They tend to say "Happy Christmas" instead of "Merry".Merry Christmas
You say ' Merry Christmas' in the UK.
merry christmas
"Merry Christmas"
merry christmas
Merry christmas
Merry Christmas
merry Christmas= Christmas aashamsakal
Hanukkah is a holiday, not a language. You cannot say "Merry Christmas in Hanukkah. That's like asking: "How do you say Merry Christmas in Easter" I think he means how do you say merry Christmas in Hebrew
Merry Christmas
Merry Christmas
Merry Christmas in Cree