Comment by dragonwriter

> Except it is,

No, it's not.

> It is because leftism promotes a resistance and challenging to authority and a prior belief in the goodness of the downtrodden masses

I could with as much, justification say it is particularly associated with right-wing movements because the right promotes a rigid adherence to rules and authority, which devolves under pressure into seeking out non-adherence with progressively finer and finer combs.

> Right-wing ideologies usually promote submission to authority and traditionalism. The problems that come with excesses in that front are of a different kind.

Maybe in some other aspects, but a cycle of eating their own under pressure is not a point on which there is a difference. The left perhaps has more contribution from “people that were on the factions side before it gained power become genuinely opposed once it started executing power” and the right perhaps more from genuine intolerance for even the slightest deviation, but they both definitely experience it.