>Why is ANTIFA allowed to operate?

They are allowed to operate in places the far left controls. These include most of America's major cities in D states. They have support from the leaders and authorities in these areas, who are likely receiving funding from Soros.

>What happens if Soros funded operations get violent and engage in domestic terrorism?

Several things:

They get to control the narrative in areas where people already are indoctrinated with far-left beliefs.

The propaganda media networks are given near unlimited footage to propagate said narrative.

Higher authorities are forced to step up and take steps to quell the terrorism.

The propaganda media networks then get to criticize those steps, furthering the narrative.

Police, NG, and Military forces are forced to engage American citizens, potentially harming or killing innocents.

Police, NG, and Military forces are put in danger.

Morale declines country-wide.

>What happens if mayors/police comms/chiefs do not enforce the law?

Higher authorities are forced to react, likely leading to overriding State legislation, making the system appear faulted and broken. This affords the far left more ammunition to attack these leaders.

It also forces new regulations to be added, which can then be manipulated by State/Local authorities, perpetuating the problem.