DeRay Mckesson, the Black Lives Matter activist turned Baltimore mayoral candidate, was arrested at an Alton Sterling protest in Baton Rouge on Saturday, according to Cpl L'Jean McKneely, BRPD spokesman.
It wasn't immediately clear what count McKesson was booked on.
According to video posted on social media, Mckesson was filming live video of the protest and walking alongside Airline Highway when he was arrested.
