Whose rights have primacy?

On March 11th 2013 in Vilnius, on Gedimino prospektas, there was an action during which everyone could participate in a free game. Although the weather was not perfect, people were participating willingly. The event was interrupted by an unsanctioned march. As we can see on the video recording, placed on www.delfi.pl website (http://tv.delfi.lt/video/UcLwTjRu/), the march…