The police via Red Flag laws which are incredibly easy to abuse.
Red flag laws are mostly used to prevent suicides and domestic violence. They are formal proceedings and due process of law. If the problem is with the law, organize and change it.
They have led to the death of one man in Maryland [0] and an erroneous confiscation of one man in Florida [1] so far.
[0]: https://www.cbsnews.com/news/maryland-officers-serving-red-f...
[1]: https://townhall.com/tipsheet/bethbaumann/2019/08/19/red-fla...
Yeah, family members said he wouldn't hurt anyone. It's very common for family members to side with abusers over victims.
The second, however, is the sort of problem that plague red flag laws.
A number of states involve no due-process prior to confiscation and require you to hire an attorney and file suit if your initial request for return of property are denied.
Having been "red flagged" by a vindictive ex, and in a "Red State" too boot, this is no joke.