In response to the Kent State shootings on May 4 , 1970 , in which four protesters were shot and killed by the Ohio National Guard , Fine , along with brothers Karleton and Dwight Armstrong and Leo Burt conceived of an attack on the Army Mathematics Research Center at the University of Wisconsin , which had been a frequent site of antiwar protests . At age 18 , Fine was the youngest of the four . Karleton made a bomb out of dynamite , of fuel oil and of ammonium nitrate fertilizer
Kent State shootings
Kent State shootings
David Fine (activist)