City of Canton v. Harris

Cities can be sued for civil rights violations when they fail to properly train officers and that failure leads to a constitutional violation. You can sue the city, not just the individual officer, if inadequate training was the cause.

A municipality can be held liable under Section 1983 if its failure to train police officers amounts to deliberate indifference to constitutional rights.

Opens path to suing cities and departments, not just individual officers. Inadequate police training can create city liability.