Are bad actors on Tor all really from the general public? Or are they anti-Tor people looking to maintain a stigma?

A Turk was telling me about a peaceful demonstration he attended, in Turkey. He said police surrounded the protest. Then someone in plain clothes threw a stone at the police. One of the demonstrators noticed that the guy who threw the stone had handcuffs in his back pocket. IOW, a cop posing as a demonstrator threw a stone in order to justify the police tagging the protest as “violent” so they could shut it down.

So of course the question is, to what extent are bad actors on Tor actually boot lickers who are working to ruin Tor for everyone?