Red Aid
The police have announced that they will prevent all blockades and obstructions of the G8 summit. The federal government will repeal the system of open borders as specified in the Schengen Convention and conduct controls all along German borders. As it is possible that activists may be denied entry, we should prepare ourselves for obstructions by the police and find out about alternate travel possibilities.
Anyway: no one should be intimidated by the announcements of the police or be scared off from participating in the protests in Heiligendamm. Everybody should find out about his/her rights vis-รก-vis the police beforehand.
You can find legal information about dealing with police excesses, in case of detention or other harassments here:
Red Aid Antirepression Guide: “Was tun wenn’s brennt” (”What to do in case of fire”)
G8: When the going gets rough (Supplement to the Red Aid Antirepression Guide)
Also check out the Legal Update here.