It has nothing do with if you can or not. It depends on if you do something to attract their negative attention.

Once you're being "investigated" anything you've said or done, your entire history is up for grabs. If that's not enough, the "investigators" will create the "evidence" or find "witnesses" who can claim you've said/done horrible* things so they can quickly handle the punishment.

Astute observers will see some parallels with other groups.

* For whatever today's definition of "horrible" is.