"There is no reasonable or normal explanation for a person possessing a 50 caliber machine gun. That very fact would make a person quite abnormal for having one."
There is also no reasonable or normal explanation for a person to own a 426 hp car capable of going 142 mph...but they own them...and they're normal.
There is no reasonable or normal explanation for a person to own a Sherman tank, yet there are some...and they haven't caused a bit of trouble.
You are just incapable of accepting anything outside of your own reality, and certainly anything in opposition to your reality, as normal.
As to threats against the governor, she's a radical, left, progressive and thus sets herself up as a target. That doesn't excuse the making of threats. However, nothing has come of these threats. They are just people letting off paranoid steam just as you are doing only from the opposite side of the social/political spectrum.