everyone can say merry christmas. No on is excluded.
The town has concluded they're not Celebrating "Christmas," they're celebrating the Holiday season.........during which there's several Holidays, and so it made more sense to call it a Holiday parade.......one where "Christmas" isn't excluded.
They concluded wrongly. If you atheists have to have a day to celebrate your atheisism pick another day. Christmas is Christmas.
I'm not an atheist.
Who are you to say that Hanukkah is < Christmas? The town is doing the right thing in recognizing that it would be more inclusive, i.e. better for the town as a whole, to include all of the Holidays as part of the Season. Selfish, I know.