In the light of the tragic killing of nine people in a Charleston, South Carolina church, which is being investigated by the Department of Justice as a hate crime, attention is being focused on the many hate groups that exist around the country.
Last year, the Southern Poverty Law Center counted 784 active hate groups. But Brian Levin, professor of criminal justice and Director of the Center for the Study of Hate and Extremism at Cal State San Bernardino, says that while extremist racist messages are pervasive on social media, brick and mortar groups are actually on the decline.