I'm not out of it, there is an ongoing inquiry into it which will determine the fault, until then he is the premier so he is absolutely responsible for everything that happens in his state at a government level.
No, I don't think it sends a good message to people to allow one protest but not another, I don't think there's anything good about that at all.
They could've done exactly the same thing they did here to the BLM protest, served a warrant on the organisers and charged them with incitement, but they didn't. They only did that for the protest that goes against them, not the one in alignment with their ideology.
That should be seriously concerning for everyone, even if you agree with their general policy positions, that is exactly what authoritarian governments do.