Kimberly Pierson, mother of Alton Sterling's son Na'Quincy Pierson, cries as she speaks to reporters following a meeting with the U.S. Justice Department at federal court in Baton Rouge, La., Wednesday, May 3, 2017. An investigation into the police shooting death of Sterling in Baton Rouge found that there was not enough evidence to prove that the white officers acted unreasonably and willfully, a federal prosecutor said Wednesday. (AP Photo/Gerald Herbert), APTOPIX