 Around 1918 , the leaders of the Italian Communists and Anarchists in the United States settled themselves in New Kensington . The group was guided by the ideas of Carlo Tresca , a union organizer for Industrial Workers of the World , which were recorded first , in his newspaper La Plebe , or The Worker , and later in his anti @-@ fascist paper , Il Martello ( which translates to " the hammer " ) . The Italian Communists and Anarchists harassed members of the Catholic Church . Italians who did go the church were made to feel inferior and many became too intimidated to go to church at all . At St. Peter 's , one priest was shot through a window while he was sitting at his desk . Another priest was threatened that if he did not leave New Kensington he would be killed . In 1918 , there were only thirteen families who attended Mass at St. Peter on Sunday . This continued for several years until Carlo Tresca moved from New Kensington to New York in 1925 . 
