They don't seem to mind the local or state government ordering all children in a public school to be indoctrinated into their humanist public religion. They only mind if Christians campaign against it. Hypocrites.
This kind of State ordered atheism has nothing to do with “separation of church and state” and everything to do with denying freedom to those the humanists hate. It's like having Muslims run your government under Shira or living in the Soviet Union or China.
Libertarians would say there should be no government schools nor any government involvement in education. I don’t agree with libertarians on everything, but they do not think people should be forced to associate (remember freedom of association? I seem to recall that being important in this country at one time) with people if they don’t wish to do so.