They could call the Soros Brownshirts(ANTIFA BLM), but they are too drug addled to behave and are so unpredictable, they might turn on Biden and become 10,000 security threats to Biden's safety.
Not only that, but if Biden gets Covid he’s probably toast, which means that Trump wins the Presidency by default. However if Biden’s ticket wins, Trump could wind up with Kamala as his VP.
https://www.thegatewaypundit.com/2020/10/dont-know-biden-stunned-trump-announces-will-not-participate-virtual-debate-hold-rally-instead-video/