I wondered about the location and time of this picture...
...then found this one, taken from another angle, but with the same building in back...
...which suggests a demonstration of the need for nude beaches in San Francisco.
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyj3UfRwDoOMakgBnbr3z3_iCTu_nHYb5nqpqr9zqbN-BKiEwp-kVjPQkwTqBc4KmhCEXU5Iu_XAbA3LXHJlr53OYdpnLNMmX4x06QL6gVmIB_vkeQ6Z6RZhHSbX0vJQ8HEZjKlawJqg1ZUq4_YT9NBXzA5FMq0xq-WqKWJSrNJ7s9ftAoMwCX6atbNPBe/s640/Kike Gil (4).jpg