They are protecting themselves from the real terrorists in this country. I would bet lots that if you were a fly on the wall for the conversations and calls they got after this came up involved safety for the band and crew.
You are allowed to vilify patriots as terrorists, but you are censored and cancelled if you expose the fake civil rights and the anarcho-communist groups for their mass intimidation of public and especially corporate groups.
It’s not just that Antifa is violent and willing to threaten physical harm. Antifa is protected by the Deep State.
They can harm YOU, and Democrat prosecutors will release them without charges.
But if YOU harm one of THEM, then expect to be involved in a legal nightmare, as Kyle Rittenhouse has seen.