I can't even understand why you would want it on your phone. Do you watch it every night before sleeping or something?
It's a primary source in a major current event. There's a thousand reasons to have it or to watch it, with plenty of legitimate ones. Perhaps he has it on his phone partly from morbid curiosity and partly because they are trying to remove it from the internet, so it is worth preserving.
Am I reading things wrong? Aren't they asking for IP addresses of where the videos came from so they can investigate it further? For all we know this guy is part of some psychotic group and they could plan another attack. Detective work generally involves following a trail. I personally don't think it's a bad thing that they are trying to follow the trail. I know Null is in his legal rights to tell them to fuck off but I can't help but feel he could potentially be helping the police.
The shooter had no involvement with Kiwi Farms. Hell, if he did post there with his plan, they'd probably be the first to openly mock him and call him names. They aren't involved and the police aren't looking for anything like they.
They are looking for people distributing the video. Already,
one 22 year old man was arrested for sharing the video. Personally, I think this is absurd, and they should be spending their time actually policing criminals rather than turning normal citizens into criminals over something so retarded. Maybe if they cared more about their citizens and less about their public image, they could've actually prevented this crime.
I'm talking hypothetical here but if another attack does happen and by the end of the investigation, if they find out that Null got the video from someone more involved in this scenario. I can't say I would feel bad if Null himself was sent to jail for obstructing an investigation. How they would go about arresting him from another country, I have no idea.
If any laws have been broken that are applicable to NZ law, they would be able to appeal to a judge to issue a warrant. Since no warrant was issued, and no laws were being broken by Null giving them the big old middle finger, I think Null's pretty safe from extradition to New Zealand to face charges for sharing a publicly available video posted to social media...