Ex-KGB guy lecturing about subversion in 1983.
The beginning is ... amusing. He claims that the Soviet Union is immune to subversion because it's closed off from outside influences. It might also be amusing that he claims religion is the only thing which holds a society together, but fails to notice that the USSR tried to weaken religion.
However, his claims that it's possible to take a society down by amplifying its internal disruptive influences might be true.
The part that catches my attention is that cultivating no-compromise attitudes among people is very destructive. And that if you're looking to punish the other guy rather than get a good solution for the both of you, you're heading for trouble.
Unfortunately, it takes two to cooperate.
I'm wondering whether the world is worse than it needs to be, not so much because people are personally rotten as because there are organizations encouraging bad behavior for reasons which have nothing to do with the self-interest of the obvious culprits.
I suggest that malice is not adorable. Even if it's from people you agree with against people you don't trust. And that tear-it-all-downism might actually be bad for you.
There's a challenge here because hunting for negative foreign influence can also be a destructive force.
I'm not sure what the answer is. Look for people of good will. Don't make things worse.