It would be the "Ku Klux Klan" that is considered to be a domestic terrorist group, since they have a long history of intimidating people (especially blacks and Jews) with whom they disagree and degrade.
B. The fire happened in 1871
Those ways were:
overrode his veto of a resolution to limit presidential war powers; investigation of Watergate; and impeachment recommendations.
I say because people are absolute morons