“The question in the eyes of many other Muslims,” according to Georgetown University Islamic studies professor John Esposito, is “are these people really Muslims or not?”

Using ancient Chinese spiritual principles, says Raymond Lo, a feng shui grand master in Hong Kong, “we can establish where is the good energy and where is the bad energy.”

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His speech on religion was one of the defining moments of the 2008 presidential campaign. Revisit analysis of what Republican president candidate Mitt Romney had to say about his Mormon faith and religion in America.

As the South Carolina Republican primary approaches and candidate Rick Santorum claims a belated victory in the Iowa caucuses, watch excerpts from a 2010 speech Santorum, a Catholic, delivered on the role of religious faith in public life.

"South Carolina is really shaping up as a make or break last stand for social conservatives," says David Gibson of Religion News Service.

"Many of the old forms of discrimination that we supposedly left behind in the Jim Crow era are suddenly legal again once you’ve been branded a felon," says Michelle Alexander, author of "The New Jim Crow."

Watch more of our conversation with author Michelle Alexander about crime, the war on drugs, and the disproportionately high number of African-Americans in prison.

"When somebody dies in Christ, or dies a Christian, it’s a good thing because he’s going to God. He has died on a good path," says Nii Adei Klu.

Listen to this week's show.