Here is someone's in detail analysis of the shooting video:

https://www.kurthaskell.com/blog/why-i-now-believe-the-new-zealand-event-was-a-complete-hoax-with-zero-dead

"The fact that this event is a hoax doesn't change much at all from it being a false flag. I understand that many will find this harder to believe but I just look at what the available evidence is. Frankly, I'm surprised I missed some of these things initially. Anyway, it all makes perfect sense now. It's obvious why the New Zealand government doesn't want this video in the public domain because it doesn't add up to careful scrutiny."