Well hell, all you need is a good article of explanation and we can just throw human rights out the window. Good job. Once again you find yourself in the wrong forum.
There is no human right for a person who has been found to be a danger to himself or others to be in possession of a firearm. The restriction could well be temporary, it might even become permanent. But it is not a violation of a human right. Any more than it violates a felon’s human rights to ban them from owning a firearms.
So, you actually defend keeping guns in the hands of a clearly certifiably crazy person?! This was given due process, taken to court, judge agreed. It was some midnight decision by a sheriff. If this guy was your neighbor in an apartment building, would you be okay with him having guns? Seriously?! If he starts shooting at imaginary people, how many walls and people will those bullets go through?