Complex sentence: In the 1950s and 60s, the Tacuara Nationalist Movement, a fascist organization with political ties, began a series of antisemitic campaigns with street fights and vandalism of synagogues and Jewish cemeteries.
Split into simpler sentences: In the 1950s and 1960s, the Tacuara Nationalist Movement, a fascist organization with political ties, began a series of antisemitic campaigns. They encouraged street fights and vandalism of synagogues and Jewish cemeteries.