As a more serious aside to the above, it is generally worth paying a bit of attention to which instance other users you interact with. There's obviously no blanket statement you can make about the users of particular instances, but there are definitely certain instances that are more appealing to... certain groups of users.
lemmy.ml in particular has a bit of a reputation for having tankies on it, but there's lots of very interesting and reasonable people there (or here, I suppose, given this is an ml community), also.
Hitler used the burning of the Reichstag as an excuse to clamp down on political dissidence and consolidate his power. It's still not clear whether it was intentionally caused by the Nazis or just a convenient opportunity for them.