Marxists in academia and in the media, doing anything they can to destabilize western nations so they can impose communism.

Their current strategy has been for a while now to push those crazy theories about equality, in order to instigate a civil war against whites/western culture. Radicals on the left are eating that shit up and acting like the useful idiots Lenin talked about.

Also the various communist tactics they use to silence opponents..

I wouldn't lump all Democrats into this, although obviously the radical left votes Democrat and plenty of Democrat politicians are playing into the hands of the Marxists (knowingly or not).

COVID-19 is just another opportunity for the Marxists to damage the economy in the hopes that it will be easier to replace it with communism. The fear-mongering and hypocrisy coming from the left about this epidemic says a lot, in my opinion.