Attendees are not allowed to wear, display, or otherwise propagate symbols of forbidden organizations according to VerbotsG or symbols relating to groups associated with the “alt furry” movement. The ban includes any sign or icon embodied in a physical object, but also optical and acoustical symbols qualified to give an unbiased third party the impression of being a distinctive mark of any of the organizations mentioned above. It furthermore applies to variations or modifications similar enough to be mistaken for those symbols or intentionally obscured renderings of those symbols.