I'm not sure where you're getting this. In the US, the First Amendment of the Constitution prevents favoritism or interference with religious belief. This is backed by years of Supreme Court precedent (http://en.wikipedia.org/wiki/Lemon_v._Kurtzman). So I don't think this will ever happen in the US (without a valid fight).
If you're talking about some other hypothetical country, then I personally wouldn't support any attempt at thought control. I do think education is important and that religious ideas (and history) shouldn't be immune from inquiry and scrutiny. Most such beliefs don't stand up if they're honestly evaluated.
I don't know of any atheist propaganda, but it would seem that if any movement needs propaganda, it isn't worth supporting.