Police shootings of Alton Sterling, Philando Castile spark outrage on social media

Just one day after the fatal July 5 police shooting of Alton Sterling in Baton Rouge, Louisiana, another African-American man is dead after a police shooting in Falcon Heights, Minnesota.

A graphic video appears to show the moment that a police officer fatally shot Alton Sterling, 37, early Tuesday outside a convenience store in Baton Rouge. Protests have since erupted at the scene of the shooting with protesters chanting "Black lives matter" and "No justice, no peace." 

In a separate police shooting on Wednesday, Philando Castile, 32, was pulled over because his vehicle had a broken taillight, according to his girlfriend  in a viral live video that captured footage of the incident.  The video has received over 2 million views and the aftermath of both shooting incidents have sparked outrage on social media and the trending topics #WarOnUS, #AltonSterling and #PhilandoCastile on Twitter.