Demonstrators rally over black man's killing

Gatherings come after protests lead to tension resulting in 30 arrests

Prominent Black Lives Matter activist DeRay Mckesson was one of several people arrested Saturday night during an often-tense protest in Louisiana that included a contingent of hundreds of people who took to the streets to call for justice and voice anger over the fatal shooting of a black man by two white police officers.

Demonstrators gathered at the convenience store where 37-year-old Alton Sterling was shot before fanning out to the Baton Rouge police department and the state Capitol for another day of demonstrations.