A white police officer in North Charleston, South Carolina, has been charged with murder for fatally shooting an unarmed black man after video recording of the shooting was released Tuesday (April 7) by several media outlets.

Meredith Clark, an assistant professor in the University of North Texas' Frank W. and Sue Mayborn School of Journalism, is available to discuss social media response to the shooting, which happened April 4. Clark may be reached at 850-559-1839 or on Twitter at @meredithclark.

Clark wrote her doctoral dissertation on Black Twitter, a social media identity that focuses on issues related to the African American community. She also analyzed social media response to the shooting of Michael Brown by a Ferguson, Missouri, police officer last August, focusing on the hashtag #IfTheyGunnedMeDown, which she says was used primarily by people of color to draw attention to what they perceived as negative stereotypes perpetuated by the news media. Clark recently discussed the research during a panel discussion at the South by Southwest Festival in Austin.