Why do ninjas assassinate people?

Ninjas historically assassinated people as part of their roles as covert agents in feudal Japan, where they were employed by samurai or warlords for espionage, sabotage, and targeted killings. Their primary objectives often included eliminating political rivals, gathering intelligence, or instilling fear in enemies to maintain control. The practice was rooted in the strategic use of stealth and surprise to achieve specific military or political goals.