I think any objective look at the facts shows that the Democrats have near total control of the media. This has been referred to as a threat to democracy by various European politicians who most Americans would describe as very liberal and no friend of Trump.
I would be appalled if the Republicans or Trump controlled the media that way, and blocked out Democrats - even those I despise. Authoritarianism 101. But it seems many Dem supporters aren't bothered by such things.
Authoritarianism 102 is where they find a group of political rivals to demonize and call terrorists. Basic stuff for dictatorships. That's why among the few coherent sentences Biden can utter, he takes such pains to remind us all of the threat of "white supremacists."