I don't know about 1975, but for the past 10 years or so if something provably politically violent happens - assassinations/assassination attempts, violent protests, politically motivated arson, etc, it's usually coming from the left. I cannot remember anything provably politically violent from the right during that period, with the possible exception of Jan 6. At least this is my perspective observing the american political life from Europe.
https://en.m.wikipedia.org/wiki/2025_shootings_of_Minnesota_...
A right wing terrorist assassinated the Democratic Speaker of the House of Minnesota, her husband, and their dog in their own home just a few months ago. The terrorist had a target list of other Democratic law makers, abortion rights advocates, and abortion providers. It didn't get a ton of coverage even in the United States due to all the right-wing nastiness on the regular.
Here's a site that made a list [1].
> In 2018, Cesar Altieri Sayoc was sentenced to 20 years prison for sending pipe bombs to nine prominent Democrats, including Barack Obama, Hillary Clinton, Joe Biden and Maxine Waters. Sayoc was a registered Republican.
> In 2020, 13 men attempted to punish Michigan’s Democrat Governor Gretchen Whitmer for enforcing Covid lockdown measures. All were far right extremists.
> Roy Den Hollander murdered human rights lawyer Marc Angelucci in July 2020. He then tried to kill district judge Esther Salas, but succeeded instead in murdering her son and seriously wounding her husband. Hollander was a far right Trump supporter.
> Quintez Brown attempted to kill Democratic Mayor of Louisville, Kentucky, Craig Greenberg, in February 2022. Brown was motivated by Black nationalism, pan-Africanism and revolutionary socialism.
> In October 2022 David DePape seriously injured Paul Pelosi with a hammer while seeking to kill House of Representatives Speaker, Nancy Pelosi. DePape is a far right Trump supporter.
> In December 2022, Solomon Peña paid gunmen to attack the houses of Democrat state lawmakers in New Mexico. Peña is a registered Republican and a former candidate for state office.
> Craig Robertson was shot and killed by FBI agents in August 2023 while being arrested for threats against President Joe Biden and others. Robertson was an army veteran with extreme right wing views.
> Donald Trump himself was targeted at a July 2024 rally in Pennsylvania. The shooter Thomas Crooks killed one attendee and injured three others, including Trump, whose ear was cut by a flying fragment. Crooks was a registered Republican.
> Another attempt on Trump’s life, thwarted before completion, was made by Trump voter Ryan Routh in September 2024. The trial is continuing.
> In April 2025, Cody Balmer attempted to kill Pennsylvania’s Democratic Governor Josh Shapiro in an arson attack which caused extensive property damage but no injuries. Balmer was a Trump supporter at the time.
> The Democrat Speaker of the Minnesota House of Representatives Melissa Hortman and her husband Mark Hortman were killed by avid Trump supporter and registered Republican Vance Boelter in June 2025.
> Boelter then attempted to murder Minnesota Senator John Hoffman and succeeded in seriously injuring the senator and his wife.
[1] https://azexpress.net/en/posts/509/none-of-the-last-31-polit...
That list seems to be limited to political targets. If we widen the net to political motivations:
https://en.wikipedia.org/wiki/Charleston_church_shooting
https://en.wikipedia.org/wiki/Pittsburgh_synagogue_shooting
https://en.wikipedia.org/wiki/2019_El_Paso_Walmart_shooting
https://en.wikipedia.org/wiki/2022_Buffalo_shooting
And many more, including the Evergreen High School shooting that happened the same day Kirk was killed: https://en.wikipedia.org/wiki/Evergreen_High_School_(Colorad...
The only recent-ish example I can think of from the left is https://en.wikipedia.org/wiki/Congressional_baseball_practic...
Seriously?
Attempted Trump assassination, July 13, 2024. The shooter, Thomas Matthew Crooks, was a registered Republican.