That's a wrong answer.

It's in relation to the Soviet invasion of Czechoslovakia during the Prague spring, where they were doing evil things like giving people more freedoms and not having everything under centralised authoritarian state control so the soviets sent over some tanks to kill people and enforce their imperialistic control over the country.

Ironically enough doing more to encourage actual communism than the larpers in Russia ever did.

https://en.wikipedia.org/wiki/Tankie

In your defence, it's confusing trying to keep track of who these authies murdered with tanks.