How do you acknowledge christmas when out in public? Do you say happy holidays or merry christmas?

The way we pronounce them over here is to split the syllables in half > Happy Holi-days and Merry Christ-mas.Or in the case of any anti-Christmas Scrooges they say Bah ! Hum-bug !

Unfortunately, no-.-
Being me I would, I'm a totally random person. But people sometimes take saying that the wrong way...
Plus, it's apparently been banned down here because it's apparently 'racist'.
Which I think it's stupid :/!