1: http://www.huffingtonpost.com/2014/01/20/martin-luther-king-...
Secondly, you're using the actions taken by a domestic law enforcement agency more than half a century ago as evidence that a foreign intelligence agency is going to blackmail Americans, neglecting the difference in missions between the two agencies, the changes in legal authorities since the 60s, the fact that multiple generations of Americans with differing cultural values have come into and left government service, etc.
Thirdly, calling someone ignorant is an insult. I'd suggest consulting the forum guidelines linked at the bottom of the page.
I only gave you one example. There are plenty but I don't think it's important. The motivation is there, for the protection of national security, to manipulate anyone who opposes the status quo. To thwart their efforts.
Martin Luther King Jr was pressured to kill himself. That he resisted this pressure doesn't mean that he wasn't pressured. We can quibble about definitions but I think a charitable reader is more than capable of understanding what I meant.