An Appropriate Response
If your country suffers a devastating terrorist attack by groups of Muslims boarding airplanes, an obviously appropriate response would be to send 150,000 troops for several years to a Muslim country not associated with the attack, spend about $100 billion per year, and pretty much destroy the country. A clearly inappropriate response, however, would be to see a group of Muslims board a plane and disperse to different locations on the plane and then react with suspicion and have them briefly detained. It's comforting to know that US Airways does "not tolerate discrimination of any kind and will continue to exhaust our internal investigation until we know the facts of this case and can provide answer for the employees and customers involved in this incident." Yes, proportionality is key after a terror attack - you wouldn't want to over-react.