Mark Potok is a director of the Intelligence Project of the Southern Poverty Law Center.

NPR: The Tipping Point: When Hate Turns To Violence

And Mark Potok tracks hate groups from the Southern Poverty Law Center.

NPR: The Tipping Point: When Hate Turns To Violence

Mark Potok, of the hate crime-monitoring Southern Poverty Law Center, says his organization gave up quantifying bias as a fruitless pursuit years ago.

NPR: Fudging the Numbers on Hate Crimes

"We were told stories that are absolutely hair-raising, " said Mark Potok, director of the law center's Intelligence Project and editor of the report.

CNN: Feds to investigate claims of police discrimination

Founded in 1995 to protect white prisoners from attacks, it operates only in Colorado and has anywhere from between a couple hundred to 1, 000 members, senior fellow Mark Potok said Friday.

NPR: Shell Casings May Tie Texas Shootout To Colo Death

Mr. MARK POTOK (Southern Poverty Law Center): I think that the better policy for independent groups, watchdog groups and so on, is to, as much as possible, stick scrupulously to the truth.

NPR: Fudging the Numbers on Hate Crimes

"We are seeing a huge reaction to the potential for gun control, and that reaction is so angry that it's hard not to be afraid of what's coming down the road, " said Mark Potok of the SPLC.

CNN: STORY HIGHLIGHTS

Mark Potok, of the Southern Poverty Law Center, said that while some U.S. extremists applauded the September 11 attacks, there is no indication of such an alliance -- at least not yet, and not on a large scale.

CNN: An unholy alliance

I'm speaking with Mark Potok, director of the Intelligence Project of the Southern Poverty Law Center, which keeps track of hate groups in the U.S., and Randy Blazak, an associate professor at Portland State University, who also studies hate groups.

NPR: The Tipping Point: When Hate Turns To Violence