Order of defeating lefties in cities:
1. Cut off their electricity. Phones will be disabled in 3 days. That’s the amount of time it takes for switching stations to become disabled. It will shut down the only means melenials only known way to communicate.
Internet cafes and Starbucks will go out of business immediately.
2. Water will soon follow. Pumping stations will cease operations as cease as soon as the diesel for the backup generators run out. Most likely 5 days.
3. Close all bridges and highways into the cities. No traffic can go in or out.
4. Disable rail communications . No trains
Tada!,, there’re toast. In 30 days the civil war is over. The side effect will be the collateral damage to the sick, elderly, and children.
Easy-peasy.
Except you won't get to fight them.
IF you go to war, you will be fighting the land forces of the United States of America (or you won't need to go to war in the first place).
Fairly often cellular systems are connected by fiber optic lines. Ditto on internet/control systems having trunk connections. The fiber lines are clearly marked with orange trim or a placard message “Optical Fiber-Do Not Dig!” for protection against backhoe assault.