You may want to google "Bonus Army", an unfortunate event in 1932 where the Army fired on unarmed civilians. If I recall correctly, Ike, Patton and MacArthur were there.
You are correct and it was McArthur that was in charge of that.
But you will note I sad “May Not” not “has not”.
Let’s fill in the blanks between “Bonus Army” and “Army fired on unarmed civilians.”
The Bonus marchers had been infiltrated by communists, “red flag wavers” and anarchists. These rabal rousers had occupied federal buildings under construction. DC called in the police to evict them, and the communists met them with bottles, rocks, bricks and small arms fire. Many police were injured and one died.
After that, the army was called in to remove them. Today, we’d probably cheer that action. The incident has been much maligned by leftists and used by the federal fascists in Washington to scare Americans into believing that the military will be used to kill you if you don’t obey. It’s a nice bogeyman.
The period between 1910 and 1935 was lovingly called the “progressive era” by the communists. During this period, America experienced bombings, shootings and violent strikes, all in an attempt to overthrow our government.
I place the blame for it on the millions of proto-Marxists from Europe that were allowed entrance to America by lax immigration policies from 1890 to 1920.