Interpreting "last few decades" as within the last 30 years, Timothy McVeigh and Eric Rudolph make the cut. - 1995 Murrah Federal Building in OK - 1996 Centen

Interpreting "last few decades" as within the last 30 years, Timothy McVeigh and Eric Rudolph make the cut. - 1995 Murrah Federal Building in OK - 1996 Centennial Olympic Park bombing Post 2001, Wikipedia has quite a list. https://en.wikipedia.org/wiki/Right-wing_terrorism#Post-2001 https://en.wikipedia.org/wiki/Right-wing_terrorism#Post-2001 I could see arguing some of these are crimes committed by right-wing groups as opposed to terrorist acts, but others clearly are terrorism.