 Later, in 2015, protesters and journalists who participated in that rally filed a lawsuit alleging "unconstitutional police attacks" on attendees.In 2015, Black Lives Matter demonstrated against the deaths of numerous African Americans by police actions, including those of Charley Leundeu Keunang, Tony Robinson, Anthony Hill, Meagan Hockaday, Eric Harris, Walter Scott, Freddie Gray, William Chapman, Jonathan Sanders, Sandra Bland, Samuel DuBose, Jeremy McDole, Corey Jones, and Jamar Clark as well Dylan Roof's murder of The Charleston Nine.In March, BLM protested at Chicago Mayor Rahm Emanuel's office, demanding reforms within the Chicago Police Department.