“...You are not going to take on a platoon of Marines...”
More likely it will be nine platoons of para-military Obamabots for a slice of the city and they will be taken on with 16 columns of militia.
As for the Marines, once some start going over to the other side...many will.
I have the feeling many of the swat types are comfortable when they have superior numbers, personal protection and fire power, but wouldn't be so gung ho with battle after battle reducing their numbers.