FYI, I’m old enough to remember that incident VERY WELL INDEED.
(Our family at that time lived within 60 miles of the Arkansas/Texas border & we were PROUD of the National Guard troops.)
I also remember a “little tiny Black girlchild” (I suspect that she was in the First or second Grade then.) walking between some 4-5 LARGE, MUSCULAR, Deputy US Marshals, so that she could attend public school.
Yours, ex-cadet