Petitioners, 32 students, were members of a group of about 200 who on a nonpublic jail driveway, which they blocked, and on adjacent county jail premises had, by singing, clapping, and dancing, demonstrated against their schoolmates arrest and perhaps against segregation in the jail and elsewhere. The sheriff, the jails custodian, advised them that they were trespassing on county property and would have to leave or be arrested. The 107 demonstrators refusing to depart were thereafter arrested and convicted under a Florida trespass statute for "trespass with a malicious and mischievous intent." Petitioners contend that their convictions, affirmed by the Florida Circuit Court and the District Court of Appeal, deprived them of their "rights of free speech, assembly, petition, due process of law and equal protection of the laws" under the Fourteenth Amendment. Held:

1. The Florida trespass statute, here applied to a demonstration on the premises of a jail, which is built for security purposes and is not open to the public, is aimed at conduct of a limited