Arab's Speak out Against Glenn Beck

I have started listening to this radio commentator about a year ago and it seems he has riled up the Muslim groups. It looks like if you give an opinion contrary to these groups then you need to lose your job. Why don't these groups just boycott Good Morning America?

The groups said that Beck _ who's drawing strong ratings with his
evening show on CNN Headline News _ has stated on his show that Arab and Muslim Americans are apathetic to terrorism. During an interview in November with Minnesota Rep. Keith Ellison, the first Muslim member of Congress, Beck asked him to "prove to me that you are not working with our enemies."