Today marks the twentieth year since the April 19 bombing of the Murrah federal building in Oklahoma City by white supremacists Timothy McVeigh and Terry Nicholas, in which 168 people were killed and dozens more were injured.

Since the Oklahoma City bombing in 1995, there have been many more terrorist plots, seditious conspiracies, individual killings and murder sprees. This timeline, compiled from SPLC data, offers an overview.

[timeline width=’900′ height=’900′ font=’Bevan-PotanoSans’ maptype=’toner’ lang=’en’ src=’https://docs.google.com/spreadsheet/pub?key=0AtEN82x9BcI-dG04NXM2b2dpSFloLWY1RnBoWVI4QUE&output=html’ ]

Yet, despite this record of right-wing violence, there is still a tendency to dismiss and ignore the threat of right-wing extremism in the US.