Started off with one of the people inside getting arrested, for what I do not know, but it appears that several other ravers inside decided that they didn't want that to happen to a fellow dancer so set upon the officer.
The officer deploys his CS gas inside, with all the fun that causes, an emergency button gets hit, bricks start getting thrown and people start getting onto the roof. We ended up having to get pretty much every single officer there was in Bristol down there to try and calm things down.
Well it's all under control now, all the people are out of the building and it all appears in order once more. That is until next week when they will likely do it all again.