A similar law was struck down here in 2012 (North Carolina).
https://en.wikipedia.org/wiki/Gun_la...North_Carolina
Grass Roots North Carolina and the SAF were involved.
I can see the issue for police trying to watch out for looters but looters don't care about such laws and if ever there was a time to have a right to defend yourself, it would be during an emergency when the gov't feared looting.
May not set a presidence but it did happen.