ISIS is in some ways our least dangerous enemy.
I agree with this comment. Since, IS are very transparent with their motives, they are a enemy which is very apparent to anyone and everyone.
I think the bigger issue is with members of the Muslim community in the West who support similar ideas to IS but aren't openly supporting acts of violence.
In the UK, there are several mainstream Muslim websites and respected individuals within their community who promote dangerous Salafi theocracy and anti-Western rhetoric. What I've noticed is that all political affairs and events are judged through Islamic lenses, history gets distorted to push a pro-Islamic narrative and conspiracy theories are often believed above facts.
Beliefs that would be considered very much a fringe within other religions are alarmingly quite common among theirs.
The "all Muslims must die" comments by Erik C are so retarded they aren't worthy of a response. However, it is unwise to downplay the Islamic threat since it is very real. The more the Muslim population expands in the West, the more obvious this will become.