On May 4, 1970, the Ohio National Guard opened fire on unarmed protestors at Kent State University in Ohio. Four students were killed and nine others were wounded. This episode examines that music that mattered to the students and the music that was made as a result of this tragedy. "Ohio" by Crosby, Stills, Nash, and Young stands alone as not only the most famous song to be associated with the massacre, but also as one of the greatest protest songs of all time. However, former Kent State students Chrissie Hynde of the Pretenders and Joe Walsh, who were on campus on May 4, 1970, were forever impacted by the shootings. So, too, were Gerry Casale and Mark Mothersbaugh, the founders of Devo, who have said that without the massacre, the band would not have existed.