"Randy Weaver had a shotgun that he altered, so his kids and wife had to die."

That's not what happened. Agents of the USG tried to get Weaver to inform on his white supremacist neighbors and he refused. They tried to sell him a sawed off shotgun through undercover agents, and when he handled it, they had his prints on it, and charged him.

This all came out in the lawsuit that he won.

He never broke the law.

The government did.