Everyone uses them.
Such tactics include slander, defamation, threats, getting close to disaffected or minimally committed fellow activists to persuade them (via psychological tactics described above) to turn against the movement and give false testimony against their former compatriots. They will plant illegal substances on the activist and set up an arrest; they will plant false information and set up “exposure,” they will send incriminating letters [emails] in the name of the activist; and more; they will do whatever society will allow.
False Flags: People throughout history has gone through false flags attack. These are fake attacks, that are big, and use to sway the public opinion.
This work because they stick. They always use the biggest story that fits in the public’s mind. The media is always quick to cover the story and use it to push the masses to adopt a desired opinion. This is used to control.