It depends whom they want to do harm to. I am speaking from the standpoint of someone in America who has a nation with a shit ton of problems here that are far worse than the one woman that was beheaded. Honestly at this point in time in America I am more likely to die at the hands of a Police officer or a crazy gun nut because I am playing Jimi Hendrixx to loud at the local 7-11.
It "depends on who they want to harm", really?! So as long as they aren't hurting black people then it's nothing to worry about, is that it? Sheesh. I think they should be dealt with WHOEVER they want to harm !!
And you still didn't answer: So what's your solution to the people who want to do harm but don't want to change?
Is your solution to try and avoid confronting the issue?