That remains to be seen. First of all, should they care about actions that are not theirs? Only a small group of Muslims do this. It's because the majority of "good Muslims" (I hate that term, but by lack of a better one) never reach the news. The ones who commit attacks do, and that's why people start to think that the Islam is about violence. Second, I've been doing some research about the Jihad and one of the rules appears to forbid to use the Jihad of retribution, revenge or punishment. It's only justified to defend yourself and your fellow Muslim brothers and sisters, and if that's true those terrorists defy the teachings they claim to follow, and yet everybody believes they are actually true to those teachings. Isn't it sad?