I moderate a few modestly sized subreddits for a niche hobby -- regular stuff, nothing that could be regarded as morally questionable or a ToS issue -- to the tune of 10k-15k active users on a busy day. My account was suspended for "suspicious activity" the other day[1], and some of my less active subreddits were also banned.
While extenuating circumstances (described in the post linked below) mean it's plausible this was an overzealous spambot, the timing is curious, as I had just added my subs to the protest, and was in the process of communicating with the mods of some fairly large subreddits about joining the protest.