Protesters and police face off in Wauwatosa, Wis., in October, after the district attorney refused to charge Officer Joseph Mensah in the shooting death of Alvin Cole early last year.

Protesters and police line up Friday, Oct. 9, 2020, in Wauwatosa, Wis. On Wednesday, District Attorney John Chisholm refused to issue charges against Wauwatosa Police Officer Joseph Mensah for the Feb. 2 fatal shooting of 17-year-old Alvin Cole at Mayfair Mall. (AP Photo/Morry Gash)