Marines opening fire? I think only during the Rodney King riots.

Any military branches opening fire? The Kent State Shooting and The Bonus Army Incident.

Any military branches just bombing the shit out of civilians on US soil? The Battle of Blair Mountain and The Philadelphia MOVE Bombing

Surely there are no examples in American history that voting eligibility exams were used to stop certain demographics from voting.

TCAS is working overtime to make up for the years of neglecting the FAA.