In Brown v. Texas, the U.S. Supreme Court ruled that police officers must have reasonable suspicion to stop and question an individual about their identity or intentions. The case arose when a man was stopped by two police officers in El Paso, Texas while he was walking away from another person in an area known for drug activity. The man refused to identify himself and was arrested under a Texas law making it a crime to refuse identification while being lawfully detained. However, the Supreme Court found that the initial stop wasn't justified as there were no specific circumstances indicating criminal activity at play; hence, his Fourth Amendment rights against unreasonable searches and seizures had been violated.

In the dissenting opinion for Brown v. Texas, Justice Rehnquist argued that the majority's decision failed to adequately consider the realities of urban crime and law enforcement needs. He contended that police officers should be allowed some discretion in stopping individuals under suspicious circumstances without needing specific evidence of a crime being committed. According to him, this is particularly important in high-crime areas where proactive policing can help deter criminal activity and protect public safety. He also expressed concern about limiting police powers based on Fourth Amendment interpretations, arguing it could hinder effective law enforcement efforts against street crimes such as drug trafficking or robbery which often occur spontaneously or are difficult to predict with certainty.