Munich massacre

The Munich massacre was an attack that happened on 5-6 September during the 1972 Summer Olympics in Munich, Bavaria, Germany. 11 members of the Israel Olympic team were murdered after being taken hostage. A German police officer was also killed.
The terrorists demanded the Israeli government to release 234 prisoners held in Israeli jails. Of the eight attackers, five were killed by the police and three were arrested. The three were released from jail.