This document provides a summary of two Supreme Court cases - Tennessee v. Garner in 1985 and Graham v. Conner in 1989 - that were pivotal in establishing modern police use-of-force policies. It discusses the background and outcomes of each case. Tennessee v. Garner resulted in restrictions on when lethal force can be used to apprehend suspects. Graham v. Conner established that use-of-force must be judged based on what an officer knew in the moment, not with 20/20 hindsight. These cases helped define appropriate limits on police authority while also protecting officers acting in good faith. They helped rebuild public trust in law enforcement.