The standard model is after a mass atrocity like NZ is for those who already wanted X to be banned to use the fear, panic, high emotions, and demands of "we must do something" to well... do something.
Both advocates of gun control and advocates of gun rights know this mechanism.
But now we have yet more evidence that these murderous losers are also aware of this dynamic.
That is that their horrific actions are used as justification for trying to change law, to change government policy.
Ponder that, you have losers who, by and large are acting out of a need to validate themselves, to make themselves (in)famous. To have their bile read around the world, to become the most famous person in the world...
And they're realizing they can also change governments.
Don't think this will stay to just weapon policy. As long as these murders advocate for something tangentially related to their horror, and push for something that those in power already wanted but did not have a pretext for...
(There's clamoring for all sorts of free speech restrictions about too)
Well, the urge to do something is strong.
(And yes... the dynamic of State actors doing X because of the horrific actions of a terrorist.... when the terrorist also had interest in the state doing X....)
To use an example. What if an eco terrorist planted incendiary devices in an oil refinery / storage area / transportation. And caused a massive fire. And wrote a manifesto that said the hope was to cause people to get afraid of the damage petrochemicals do.
And then a Green-friendly government used that attack to... clamp down on petrochemicals.
Note the dynamic at work
Maybe bans on streaming video or social media he NZ government is also looking to do that. And has arrested people for sharing videos.
Yes... .they're calling for real-time monitoring of everyone's activity online with instant ability to silence anyone for any reason...
So wait... they want a Chinese style control of the net?
And recall... that the killer in NZ thought China was best government.
Giving the terrorist what he wants.