Sterling Hall bombing
1970 CE.
Shown on the map at 43.074°, -89.405°.
The Sterling Hall bombing occurred on the University of Wisconsin–Madison campus on August 24, 1970, and was committed by four men as an action against the university's research connections with the U.S. military during the Vietnam War. It resulted in the death of a university physics researcher and injuries to three others.
Text from the Wikipedia article Sterling Hall bombing, licensed CC BY-SA 4.0.