I remember that. We were dragging the hippies over to RFK stadium by the busload.
I was held in the coliseum for several days and then the DC jail.
In the Coliseum there was no food, no showers or blankets, we did have water from the bathroom sinks and drinking fountains.
About day 2 or 3 the national Guard raised up some money and bought us all a single small hamburger each that they brought in and we dispersed (effectively) among ourselves, about 3,000 of us, an exercise that I doubt modern Americans could pull off well, but that was the only food.
The DC jail was great on food, it was a slice of bologna between two dry slices of white bread but they would shove in a big box filled with them and you could eat all you wanted.
Were you part of the 4,000 82nd guys?