These are the main organizer's contact intormation: https://querdenken-711.de/impressum-%2F-kontakt On top of that yt page to the left of his picture there is some contact info to Samuel Eckert who was the most important Youtuber there. He has direct contact to the organizers: https://www.youtube.com/c/SamuelEckert/videos His email address is "Sam@" followed by the domain (behind the www.) from the website listed on that picture.  This was the journalist who was arrested today: https://www.youtube.com/c/AktivistMann/videos Maybe you can reach him via his youtube channel or on Telegram "Aktivist Mann".  Here he was arrested (just for short time?): https://youtu.be/vXYbneKaToQ?t=2312  He has contact to the other important people there.   Edit: The journalist is now free again after 5 hours in prison, just for reporting from the events.