The typical Mind-Control tactic is to get the Stupids to react, Pavlov-style, to the photos and the mindless emotion such as Neil Young wanted to wallow in.
Anyone who's bothered by Kent State...I urge, to dig. Deeply. Focus on what the Ohio National Guard was doing that month, JUST prior to deployment at Kent.
And try to learn what the "protest" movement was up to, prior to various Weathermen agitators whipping things up with exhausted, angry NG troops.
Read, for example, the already-planned Incident Control strategy the Kent Chamber of Commerce had in place. It was commonsense, if a little bit not-PC. The first strategy was for the bars and clubs of downtown Kent to just offer free draft beer to any demonstrators, potential demonstraters...anyone. It was to immediately diffuse things - and two nights prior to the shooting, it did work.
The protesters quickly quaffed the free beer, while a city crew, working at midnight, was replacing a burned-out stoplight unit. In a cherry-picker - and a drunk driver hit the truck, leaving an employee hanging off the cable the traffic light was on. Three "rioters" improvised a rescue, involving a tall stepladder and a pickup truck someone had, and got the city worker down safely. To a round of applause by kids who were minutes earlier, preparing a riot.
Have another beer, peeps.
Kent State was caused, in the end, by two factors: IMPROPER actions by the State government - calling in the NG troops (Gov. James Rhodes wanted to make a show of keeping the campus open) when the Highway Patrol had both authority (State property) and training (Riot Control was a new aspect of their duties, and they had been trained only months earlier). That the outside agitators provoked the NG troops, was to be expected. It's what they DO. Those who cannot build, must destroy.
The second factor was, Rhodes' reluctance to just close the campus - the way California state campuses were closed when the same series of threats of violence, emerged. Lock them down, send the brats home, let the parents deal with their problem children.
FWIW, the coed kneeling over a prone body there...she was not a student. She was a 17-year-old runaway who was crashing with some hippies in the Kent area, and had come out to see the sights.