William Saletan in Slate on April 28, 2013 rounds up several stories that explore the possible explanations and motivations behind the radicalization of the suspects.

An April 23, 2013 Associated Press story says questioning of Dzhokhar Tsarnaev by authorities indicated “the two brothers were motivated by an anti-American, radical version of Islam.” A CNN story adds that the older brother was the driving force behind the attacks and that they had no contact with international terrorist groups but were affected by watching videos online.

Read an April 28, 2013 article by John Blake at CNN about extremism.

Read a May 3, 2013 Time magazine essay about what the latest neuroscience says about the biological origins of evil actions.

Read a May 6, 2013 Rolling Stone article that analyses media’s effect on radicalism. It quotes John Horgan, director of the International Center for the Study of Terrorism at Pennsylvania State University, as downplaying the idea that young men can “self-radicalize” by watch YouTube videos and reading Al Qaeda magazines.”

Lana A. Whited is professor of English and journalism at Ferrum College in Ferrum, Va., and editor of The Ivory Tower and Harry Potter: Perspectives on a Literary Phenomenon (University of Missouri, 2002). She co-authored a chapter on moral issues.

Ashram Vrajabhumi is an organization in Brazil that offers resources for “simple living and high thinking” through Hindu meditation and prayer.

The Argentina Ramakrishna-Vivekananda Center is an organization that promotes Hinduism and Hindu Dharma throughout Argentina. The website offers current news articles, additional associations on Hinduism and resources on celebrations and festivals.

The Hindu Society of Berbice is a nonprofit religious organization in Guyana that promotes and preserves Sanatan Dharma and Hindu culture by engaging its community in Hindu projects, programs and activities.