When is the 4th Amendment violated in relation to search and seizure?

The Fourth Amendment protects individuals from unreasonable searches and seizures by the government. It establishes that for a search or seizure to be deemed lawful, it generally requires a warrant issued by a judge based on probable cause, unless specific exceptions apply.

A search or seizure is considered unlawful when it violates these established protections. This might happen when law enforcement actions are conducted without a warrant and without any valid exception that justifies the infringement on a person's reasonable expectation of privacy. Examples include searches conducted during an illegal stop or without the necessary consent.

Thus, the correct answer emphasizes that a violation occurs when the search and seizure is deemed unlawful, as such actions disregard the constitutional safeguards intended to protect individuals from government overreach.