According to people close to the org this is someone who isn't directly with the org but some sorta sympathiser for the cause or something. More was said on a German podcast about the whole thing(of you are able to understand German check out Honigwabe from Sunday 2 days ago). What made this guy punch the helper restraining the terrorist is sadly as of now unknown. Starts around here. They talk about the guy in blue at 30:30 and the specific part is 33:00.

According to people close to the org this is someone who isn't directly with the org but some sorta sympathiser for the cause or something. More was said on a German podcast about the whole thing(of you are able to understand German check out Honigwabe from Sunday 2 days ago). What made this guy punch the helper restraining the terrorist is sadly as of now unknown.