Today is the fiftieth anniversary of the day, also a Thursday, that President Nixon (as appalling a concept in its day as "President Trump" is today) announced on national tv the invasion of Cambodia. Nixon had promised to wind the Vietnam War down; now he was expanding it to another country.
Unsurprisingly, protests followed. And on Monday the 4th, the National Guard decided it would be a good idea to respond to those protests by shooting random students at Kent State.
Just to remind you that things were rather bad, fifty years ago.