Beware survivorship bias. If some religion was suppressed effectively, it's less likely that you'd have heard of it and even if you have, less likely that it would come to mind.
Neither Russia nor China moved to forbid Islam even through both have homegrown Muslim terrorists. I don't think their concern was mainly about rights.
That was a hypothetical. The hypothetical was chosen to be something that embodies the same principles but to which most people would find the answer fairly clear. The hypothetical was not chosen to actually be true.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.