my dreams are starting to really scare me

i was standing in a concrete room with anonymous others. there was a small hatch, a little concrete door in the concrete wall. one of the anonymous suggested i check out what was behind it. it opened. i had to lay on my back and slide myself in, holding onto the top of the jamb. it was that small. the ceiling became a little elevated as you went further into the cell, but it was barely enough space to sit up. they closed the door once i was in. it was a holding cell of some sort, giving me about one foot of extra space from my body in each direction.
they told me, in 1968, this was where MLK and JFK had to live. they lived
here?
i think, i wouldn't have been able to handle it. it was stuffy, claustrophobic. i could hardly breathe, the air had become suddenly thick and wet and warm. i thanked god i didn't have to stay there, that i wasn't MLK or JFK , but i acknowledged one day i might be, and i might have to.