A Jewish nationalist group. From the Latin, sicarius, meaning "dagger-man," which in turn goes back to the word sica, "dagger." "These men committed numerous murders in broad daylight and in the middle of the City (Jerusalem - SL). Their favorite trick was to mingle with the festival crowds, concealing under their garments small daggers with which they stabbed their opponents." The Sicarii first appear in the 50's AD, but Menahem, their leader, was the son or grandson of Judas the Galilean, a rebel from the time of Jesus' childhood. They occupied Masada, where their synagogue and ritual baths testify to their piety.