In which case did police violate 4th amendment rights by establishing an unlawful roadblock?

The case in which police violated Fourth Amendment rights by establishing an unlawful roadblock is Brower v. Inyo County. This case dealt specifically with the issue of unreasonable search and seizure, highlighting how a roadblock intended to stop a fleeing suspect constituted a seizure under the Fourth Amendment. The court found that the roadblock was not justified under the circumstances, as it violated the rights of the individual involved, leading to the conclusion that police actions must adhere to constitutional standards to be lawful.

In this context, it’s important to differentiate this case from the others listed. Miranda v. Arizona primarily addresses the rights of individuals during police interrogations. Terry v. Ohio focuses on the 'stop and frisk' doctrine, allowing police to pat down suspects under certain conditions without a warrant. Gideon v. Wainwright deals with the right to counsel, ensuring that defendants in criminal cases have legal representation. Each of these cases, while significant in their own rights regarding individual liberties and police powers, does not pertain to unlawful roadblocks or the seizure of individuals in the same way that Brower v. Inyo County does.