Extremism

https://en.wikipedia.org/wiki/Extremism

Counter
http://www.counterextremism.com/

Against
http://www.againstviolentextremism.org/

Post
http://www.huffingtonpost.com/news/religious-extremism/

Project
http://www.clarionproject.org/

Tube
https://www.youtube.com/results?search_query=extremism

Slides
http://www.slideshare.net/search/slideshow?searchfrom=header&q=extremism