You're welcome! If you're interested in that sort of thing: you might want to look into Stalin's purge against the Trotskyists, which mirrored the night of the long knives.

Political extremists have a predisposition to purge from their own ranks anyone who threatens their authority, for their goal is not to facilitate meaningful change, but rather to seize and maintain power at all costs.

That's a blessing, however, as it's made their movements inherently weak; Stalin crippled the Soviet military in his paranoid bloodbath. Democracies last longer than dictatorships for a reason: they're much more stable — especially with systems that require coalitions, such as proportional representation, and systems designed to elect moderates, such as favorability voting.