A reminder in times where mass media declare recently deceased former chancellor of the Federal Republic of Germany Helmut Kohl "a person loving and always having fought for freedom":
In 1985, by the first government under chancellor Kohl, the change of the general law concerning the freedom of assembly had been applied that imposes a ban on wearing face coverings ("Vermummungsverbot") for most public events and a ban of protective gear such as armor of all kinds on these events.
Ever since then, the only right to assemble you have is to come around in your casual suit and to be recognizable for every policeman on this event at any given time.
(See post: http://matrixmann.livejournal.com/104929.html
(all links in German))