I'll start by listing:
Intelligent Design and Young Earth theories...
I'm sorry, but if you hold those views, I don't see how you can really be viewed as part of the mature scientific debate and discourse going on in the 21st century when even little me, with just too many hours watching documentaries and lectures on YouTube and a handful of science classes in college (once I get my BA and go for my Masters in English, I think I WILL try and go back and take more Bio, I really love it, I just don't have time to take Bio classes as a hobby with an English major and a PoliSci minor, but someday I'll revisit it, Biology isn't going anywhere, after all) can see the flaws in those arguments and just how poorly they're made.
So, those are the safe ones...
I suppose if I wanted to get more adventurous:
Teaching the Bible as an example of "good" literature (good and bad are subjective to a great degree in literature, but even structurally, if ever a book were to fail, it's the Bible) and...
I'll go ahead and give Putin the chance to respond on this, as I'm sure he will once I say this--
But I'd argue that pushing for Communism AS IT HAS BEEN IMPLEMENTED THUS FAR--I'll leave that huge qualifier in, as while I deplore the theory on the whole, I'd agree that at the very least someone could try and remake the theory into something perhaps better or more feasible and workable--is something of a failed doctrine as well...
Again, not necessarily Communism ITSELF--though I myself don't see it ever working and even if someone could get it to work I find the system and Marx's ultimate goals deplorable--but if someone wanted to implement it that way it was already attempted in failed states such as the USSR or, even better, would argue for North Korea's model...I'd cringe and call foul.