Well, COINTELPRO certainly didn't : we've got recent examples about how the FBI monitored the Parler group discussions that were planning the January 6 2021 United States Capitol rally - including convincing some of the most risky elements to not participate, and (supposedly) warned Washington law enforcement about it well in advance.

Which is fine I guess, as long as it doesn't go into the more abusive examples listed.

One thing that jumped at me when (re-?)reading the letter to MLK from the FBI : first you have some very informal speech :

"look into your heart", "you are done", "you are [] an evil, abnormal beast", "there is only one thing for you left to do"

Then SUDDENLY : "You have just 34 days in which to do it (this exact number has been selected for a specific reason, it has definite practical significance)."

Lol, talk about a change in tone, I wonder if MLK noticed it ? (The specific reason being Christmas, but still...)

Cold war history really broke people's brains. Yes this took place in the 1970s, no such thing happens today.