The Zealots were a group of Jews who began to emerge as a religious/political movement around the beginning of the 1st century CE. They strongly opposed Roman rule and turned on everyone, including other Jews, who cooperated with Rome. A subgroup of them, known as the Sicarii, frequently attacked Romans and those considered to work for them.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Zealots/.