I never said evil, pretty sure at least some dictators had good intentions. I said they were all stupid, I can't really find any exceptions to it either. Also movies tend to portray dictators like some genius madmen which is extremely wrong, like most nazies were absolute troglodytes but movies portray them as some strategic geniuses. Like their missiles were initially so shit because their scientists believed the earth was flat and didn't take the curvature of the earth into consideration.

Every dictator at some point shows what a moron they are and so far that has played out in history.