“However, there will be no distinct battle lines so the entire US will have to be put under martial law.”
Government will TRY to deceive people into believing they are impartial and not taking a side. Because it will be a cultural/race war, not a civil war in the classic sense.
And it will be a covert war with most of the action occurring under cover of night. Folks smiling at each other in the WalMart, then burning homes at night. Snipers everywhere. Car bombs. Great toxic contaminations. Gated/walled and guarded complexes for government.
And nobody safe.
Anywhere.
You’re describing 1858 Kansas!
In short, the US will become like South Africa.
JoMa
“...And it will be a covert war with most of the action occurring under cover of night....”
See “Selco: One Year in Hell” for what it would be like. He lived through it.
http://www.hourofthetime.com/1-LF/One%20Year%20In%20Hell.pdf
Rwanda.