There are hundreds of thousands of radical Muslims living here in the US. For example, many of the men in the United States don't wear thobes and some even shave their beards (gasp) - against culture AND scripture (Quran 4:59), the women don't wear hijabs and some don't wear a headdress altogether - against culture AND scripture (Quran 24:30), the men don't beat their wives when they disobey and some of the women even have jobs!!! - WAY against culture and scripture (Quran 4:34), almost all the women go out for leisure and casual shopping - against culture and the al-Ahzaab (33:33), . . . etc.
In most Islamic countries around the world such radical behavior from Muslims would result in fines, jail, and even execution. THIS is the difference between a radical and a fundamentalist. Groups like al Quedia aren't radical by any means. They're hard core fundamentalists.