Using this as a medium for bigotry is inappropriate, I agree. However, pretending like this isn't an ongoing thing made up by a sustainable stream of people willing to participate is also inappropriate. 

The OK City bombing was a terrorist event. However, After McVeigh was taken down, there were no other attempts to attack the government based on the treatment of people at Waco and Ruby Ridge, which was McVeigh's stated motivation. This is because it truly was the mark of a select few (or one). 

This problem with radical Islam is different. They have a steady stream or people willing to join and fight and while it may be a minority of the population at large, it is not a select few and should not be treated as such. Additionally, these actions are never condemned by the Ulema or any other Islamic authority, which is the same as condoning them when it comes to cowardice such as this.