"In America, where there is freedom of speech, where there is the right to say nasty things, it is difficult to know which one of them is going to turn into a person that will take a semi-automatic weapon into a Sikh temple," says Scott Levin, Regional Director of the Anti-Defamation League.
Wade Michael Page had a long relationship with white supremacist organizations before he walked into the Sikh temple in Oak Creek, Wisconsin and murdered five men and one woman. He was a singer and guitarist for the white supremacist band "End Apathy."
"Our country does a fantastic job in trying to root out foreign terrorists from coming into our country, but one of the difficult things is to try to keep the eye on the ball of domestic terrorism," Levin said.
"I think that is a difficult task," says Allison Cotton, a criminology professor at Metropolitan State University of Denver. "I think that law enforcement should be trained and retrained and then trained again on some of the symptoms and signs of radical behavior. I think we tend to focus too much on international terrorism and not enough on domestic terrorism."
(KUSA-TV © 2012 Multimedia Holdings Corporation)