When police officers stop-and-frisk, they question and search an individual based on a suspicion that the person has committed or is going to commit a crime. The policy is designed to stop crime before it happens. When crime rates dropped in the 1990s, stop-and-frisk programs were often credited. However, the tide turned against the tactic when data showed that police disproportionately targeted people of color. Many communities protested the practice, and the courts intervened. This Lowdown lesson explores the history of stop-and-frisk and how the practice, once seen as a solution to urban crime, evolved over the decades.