Radical Islamic converts defend violence against the U.S. outside a U.S. mosque . `` We tell them what the real Islam is all about . Inside the mosque , an imam preaches against terrorism . Authorities say the language walks `` right up to the line '' of free speech protection . See the full investigation on ` `` AC 360 tonight , up to 4,000 ET .
Radical Islamic converts defend violence against the U.S. outside a U.S. mosque . Inside the mosque , an imam preaches against terrorism . Authorities say the language walks `` right up to the line '' of free speech protection . See the full investigation on ` `` AC 360 tonight , up to 4,000 ET .