Lesson for the Police - Blocking Resupply Lines
Dannenberg was the most important camp at wednesday evening - the transport was just a few kilometers away, and the protestors made themselves ready for the last railway block (some already did that a kilometer away).
But this time the police was faster. Some "black-block-like" guys started to throw stones at the police and shot "flares", when the police started to strike back with watercannons and excessive usage of batons, they fleed through the camp, where 1500 people gathered peacefully.

The police decided to make a ring around the camp, and block the protestors from getting out (lots of those who attacked the police first, made it out of the camp before).
so it was pretty easy for the police to control the protestors, and give them no chance to join the others, and block the laster kilometers of the railway.

several injuries were reported - some serious injuries - which didn't got help too fast, because even the emergency and doctors had problems to bring in their medical stuff.

That tactic doesn't seem to be new - crossings and streets were blocked in the days before, when protestors knew, that the police will use those ways to transport their units to a protest going on somewhere else.