Throughout history, what other groups of "assassins" have operated similar to the Hashshashin at Masyaf, Syria?

by clanMcalpine
Bernardito

This question has been removed because it's an "in your era" or "throughout history" question, which are not appropriate for this subreddit. If you have a specific question about a historical event or period or person, please feel free to re-compose your question and submit it again. Alternatively, you may PM /u/caffarelli to have your question considered for an upcoming Tuesday Trivia thread.