So a shot or two MAY HAVE been fired by a student whereas there is absolute proof that 67 shots were fired at the students.
And how strong is the evidence that a student (or someone else) might have fired at the guardsmen
Among the strongest pieces of evidence was a pre-dawn conversation -- never before reported -- between two unnamed men overheard inside a campus lounge later that night. Their discussion was witnessed by the girlfriend of a Kent State student and conveyed up the FBI chain of command 15 days later.
"We did it," one man exulted, according to the inquiry. "We got the riot started."
Notice that even if this discussion did take please the man only mentioned that they got the riot started not that he fired a gun at the guardsmen.
And even if shots had been fired that doesn't excuse the fact that the killing of students that were not a part of the riot and in fact were more than 380 feet away from the guardsmen.