I followed ESR one time at Penguicon.
He'd had the audience move their chairs into a big circle. The projector table was moved out of his way so he could sit in that spot. The ripped-up taped-down power and video cables were now a wadded mess.
He ran over.
At two minutes before my slot, I had to say "Excuse me, time's up, could you put stuff back before next hour?"
ESR rolled his eyes & walked out.
I spent 15 minutes cleaning up.
Right-wing: I got mine, screw you.