This hits the nail on the head:
Racial Profiling at U.S. Airways – TalkLeft: The Politics Of Crime Six imams attending a conference in Minneapolis took time to pray at the gate before boarding a U.S. Airways flight to Phoenix. A passenger handed a note to a flight attendant pointing out the “6 suspicious Arabic men” on the plane. Disturbed by their “unsettling” behavior — which apparently consisted of praying and asking for seat belt extensions — the crew told the police that the imams needed to be removed. They were escorted from the plane in handcuffs and detained for five hours before authorities conceded that they posed no threat.
U.S. Airways refused to book the imams on another flight to Phoenix. According to the executive director of the Council on American-Islamic Relations, Muslims (both passengers and airline employees) have more complaints about U.S. Airways than other airlines. The incident prompted the Council and the NAACP to ask for Congressional hearings on racial profiling in airports.
Can you imagine the outcry from the religious right if six Christian pastors were removed from a flight because they prayed together at the gate? U.S. Airways would be deservedly out of business in a week.