Because I am pretty sure the urban communities don't have any ICBM's.
If there really were a civil war in the United States, do you honestly think it would be rural whites vs. urban blacks, with no other allies or belligerents? Perhaps this is the real reason you want to crack down on Muslim immigrants. The war you're dreaming of against Chicago gang bangers would be a different fight if Islamic militants join their bunker.
"...the successful annihilation of organized crime's subculture in America would rock the 'legitimate' world's foundation, which would ultimately force fundamental social changes and redistributions of wealth and power in this country. Meyer Lansky's dream was to bond the two worlds together so that one could not survive without the other." - Dan E. Moldea
