Large law firms are helping lead a wave of litigation that has emerged since George Floyd’s killing in Minneapolis in late May, alleging excessive force by police officers at protests and other acts of police violence.

The ACLU of Minnesota and attorneys with Fish & Richardson are teaming up for a class action lawsuit filed Tuesday against Minneapolis and city police officials over injuries suffered by protesters demonstrating in the wake of Floyd’s death. Meanwhile, firms including Debevoise & Plimpton, Snell & Wilmer and Perkins Coie are involved in a series of lawsuits filed in connection to the recent use of federal law enforcement in Portland, Oregon.