Why? If a person dies from it, that is their own fault. And if a person kills another with it, that's murder. But it still requires an idiot to do that.
I'll arm my golem with one.
Uhh its... sort of like what if it drops and its on and goes spiraling out of control creating a death light show as its beam goes spinning around until it stops. Yea, not something you should have unless you have it for a purpose, are trained in it, and are not a [censored] dumb ass. Hence the training, and of course regulated. For all intents and purposes it may as well be a military grade weapon.
Edit
It is a laser, and not a contained thing. That means it just goes on unless they found a way to limit that, but then it could easily be modified to re extend the range to several miles. And if your really good you might be able to take away the visible light. You would have an instant death sniping weapon that no one would ever see and would be untraceable. Now put this in the hands of your average idiot.