Xenophobia is good because our NATO/US overlords which don't engage in propaganda tell us to hate our enemies. Then in X years they stop being our enemies and we point our irrational hate to someone else. It's also useful because you can label any dissenter as "pro Russian".

The McCarthy strategy/red scare is very effective.

We're the good guys though. Remember that. If we admit any wrongdoing ever, that's just history and now we are good. Or else.