Problem with a communist movement in America is its historically been a labor driven political process. The people opposing the communist are mostly Blue collar workers. This leaves the communist supporters in a bad spot if push comes to war. Think about how fast the infrastructure of this country could be shut down with the right people. Just like the east coast back out all because of First Energy which didn't even effect Ohio as much as the East coast.The most useful weapon on a battle field is a bulldozer

https://www.crainscleveland.com/energy-and-environment/crains-look-back-2003-blackout-was-dark-day-firstenergy-and-many-others