Quote
"Notification systems requiring that those who intend to organize a peaceful assembly must inform the authorities in advance and provide certain salient details are permissible to the extent necessary to assist the authorities in facilitating the smooth conduct of peaceful assemblies and protecting the rights of others. (...) Notification procedures should be transparent, not unduly bureaucratic, their demands on organizers must be proportionate to the potential public impact of the assembly concerned, and they should be free of charge."
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