Why, anything bad, extremist etc.
http://www.godhatesamerica.com/ghfmir/main/ind ex.html
Like that. What I'm trying to say is that all religion is flawed because it is partly followed, or even run, by people with their own agendas. If people like the people running that website above got their own way, they'd have homosexuals living in fear, if not dead, they'd have women chained to the kitchen sink, and there are many who believe that the apocalypse is coming, or a socialist plot, so they're happy to accelerate global warming and inflict suffering on the whole planet. This isn't excusing Islamic terrorists, merely pointing out that for every evil in Islam, either its doctrine, its followers or its actions, there's an evil in Christianity.
For a balanced argument I will provide the following link.
http://en.wikipedia.org/wiki/Criticism_of_Isla m
My point is, the War on Terror was a clash of a dangerous but small movement in the Middle East versus a dangerous and established movement in the US.
It wasn't our war. Otherwise, where was the specific threat to the UK before 9/11? Why was there no attack by Muslims in the years before 9/11?
Just my view.