[InSovietRussiaORGASMGotU]

If you think about it, religion in itself is a superstition, so the question becomes, do people who accept a certain set of superstitions (the religious beliefs) accept a certain superstition? Considering a superstition to be "anti-religious" may be possible but then again, it's arguing whether or not a certain superstition is considered to be against your set of superstitions. Yes it's possible.

I don't believe in any theistic beliefs, so my superstitions would be don't walk under a ladder if someone is on it (although could be argued to be common sense) and there's no such physical thing as heaven, hell, etc... .