“ None of our precedents reflects such an interpretation of the Fourth Amendment with respect to the right to resist the search and seizure of one's possessions, even when those possessions are in public places. ”

“ We have noted repeatedly in the past that the Fourth Amendment "protects people, not places." Katz v. United States, 389 U.S. 347, 351, 88 S.Ct. 507, 511, 19 L.Ed.2d 576 (1967) . Just because petitioner's packet was in a place that was not private does not deprive him of a right to resist a search of that packet, any more than Chadwick was so deprived by his placement of his suitcase in a car which the police had no cause to search. ”

“ The Fourth Amendment protects from unreasonable searches not only an individual's home and person, but also his effects. Even granting that petitioner had no "expectation of privacy" in the back seat of the car, he had standing to object to the violation of his Fourth Amendment rights when an admittedly illegal search and seizure of his property was conducted. ”