Community leaders are justifiably worried that the probe will be too limited; they urge authorities to consider all possible federal and state criminal charges against officers who were caught on video killing a man who was already pinned to the ground by multiple police officers in Baton Rouge, and another killed in Minnesota after a traffic stop.

Timeline

​Baton Rouge, Louisiana: 4 July 2016
Alton Sterling shot several times while being held on the ground by police
http://www.cnn.com/2016/07/06/us/baton-rouge-shooting-alton-sterling/

St. Paul​, Minnesota: 5 July 2016
Philando Castile death: Aftermath of police shooting streamed live by girlfriend from inside car
http://www.bbc.com/news/world-us-canada-36732908

Dallas, Texas: 7 July 2016
Four officers killed, seven wounded in Dallas shooting protest
http://www.reuters.com/article/us-minnesota-police-idUSKCN0ZN0MF​

Breaking News: 8 July 2016
Police negotiating with a Dallas suspect
http://www.cnbc.com/2016/07/07/two-police-officers-shot-at-dallas-protest-rally-nbc-5-reports-amid-outrage-over-alton-sterling-philandro-castile-shootings.html