Police officers lean against a wall in pain surrounded by fellow officers, after being injured by an explosive device thrown by protesters during clashes outside of Mexico's Attorney General's Office in Mexico City, Thursday, Sept. 22, 2022. The demonstrators were marching ahead of the anniversary of the 2014 disappearance of 43 students of a teachers' college in Iguala, Guerrero. Multiple police were injured by the explosion and loaded onto ambulances. (AP Photo/Fernando Llano)