Summary

Portrait of Earl Warren Earl Warren Sibron v. New York — Opinion of the Court

The District Attorney for Kings County seems to have come late to the opinion that this conviction violated Sibron's constitutional rights. For us to accept his view blindly in the circumstances, when a majority of the Court of Appeals of New York has expressed the contrary view, would be a disservice to the State of New York and an abdication of our obligation to lower courts to decide cases upon proper constitutional grounds in a manner which permits them to conform their future behavior to the demands of the Constitution. We turn to the merits.
Source: Wikisource

Portrait of Earl Warren Earl Warren Sibron v. New York — Opinion of the Court

It must be emphasized that Patrolman Martin was completely ignorant regarding the content of these conversations, and that he saw nothing pass between Sibron and the addicts. So far as he knew, they might indeed 'have been talking about the World Series.' The inference that persons who talk to narcotics addicts are engaged in the criminal traffic in narcotics is simply not the sort of reasonable inference required to support an intrusion by the police upon an individual's personal security. Nothing resembling probable cause existed until after the search had turned up the envelopes of heroin.
Source: Wikisource

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