For the purpose of peaceably protesting the denial of their constitutional right to equal treatment in a public facility, petitioners, five Negroes, entered the public room of a regional library operated on a segregated basis by the Louisiana parishes where they lived and another parish. No one was in the library room except petitioners and the library assistant. Petitioner Brown requested a book. The library assistant, after checking, advised that the library did not have the book but that she would request it from the State Library and that Brown would be notified upon its receipt. (The book was mailed to him at a later date, with instructions to mail it back or deliver it to the librarys "Blue" bookmobile, a facility reserved for Negroes only.) Thereafter the library assistant asked petitioners to leave. But, for the purpose of manifesting silent protest against the librarys segregation policy, Brown sat down and the others stood near him. There was no noise or boisterous talking. The branch librarian also asked petitioners to leave but they remaine