Complex sentence: A legal injunction forced the event to be cancelled, keeping the musicians away; but a crowd of 30,000 attendees arrived anyway, to find no food, no entertainment, no adequate plumbing, and at least seventy drug pushers.
Split into simpler sentences: A legal injunction forced the event to be cancelled, keeping the musicians away; but people came anyway. A crowd of 30,000 people showed up anyway, to find no food, no entertainment, no adequate plumbing, and at least seventy drug pushers.