As a lawyer (now recovering) I successfully litigated actual First Amendment Free Speech cases and Kent State was NOT a denial of Free Speech. It arose from an assault (Check Black's Law Dictionary/no contact necessary/threat sufficient) by the leftist trash as they marched against the guard. Shall the guard do as the leftists order them? Shall the guard turn their weapons over the the Ho Chi Minh love slaves who could turn the guard's weapons against the guard? At Kent State, the guard were the grownups and the punks got what they deserved. Or at least part of what they deserved.
Your tagline, in the context of your posts, is an affront to common sense.
Your entire line of thinking indicates you think it is all right to kill unarmed people. Perhaps you should take a look at who sent those troops there, totally unprepared. The fact is that people were killed, just as in Iran.
As far as my tagline, you have no idea what you are talking about. I am as conservative as anyone — in fact I think the government sending troops to shoot its own citizens is an affront to the Constitution and the First Amendment.