David Koresh‘s religious group in Waco, Texas, known as the Branch Davidians, was overwhelmed by federal agents under orders from then-Attorney General Janet Reno in 1993. After a 51-day stand-off with Koresh, the agents moved on the Branch Davidian compound with tanks. A fire broke out and Koresh was killed, along with 76 of his followers (including 20 children).
168 people were killed at a federal building in Oklahoma City, Oklahoma when a van packed with explosives was detonated in 1995. A former U.S. soldier, Timothy McVeigh and his co-conspirator Terry Nichols, were convicted in 1997, and McVeigh was executed on 11 June 2001 (Nichols was sentenced to life in prison).