> This was because Parler leans right and some messages by some users encouraged violence.

This had nothing to do with Parler's political leanings and everything to do with Parler's wildly inadequate content moderation combined with top users calling for the execution of public officials with impunity.

Facebook's userbase is very right-leaning and has arguably just as many calls for violence, but they at least have a fully staffed moderation team.