To be fair - non believers didn't really start this s**t. Christmas is also primarily a pagan festival co-opted by the church. Atheism is still very young, and in the process of asserting itself. The last witch was burned in the UK in the 1790's, so I think religious people perhaps need to take things like that into consideration when attacking people happy to see the church fall on hard times.

That's why Judaism is so chilled out, and Islam is like an angry little brother trying to fight it's way up the pecking order.