Crawford III, Ezell Ford, Kajieme Powell, Carlos M. Perez, Akai Gurley, Tamir Rice, Rumain Brisbon, Eric Garner, Dennis Grigsby, Jessica Hernandez, David Kassick, Antonio Zambrano-Montes, Daniel Elrod, Charly Leundeu Keunang and other people of color have died at the hands of police under questionable circum