https://news.yahoo.com/mexico-police-fatally-shoot-resident-112135587.html
Guns are legal in this country. Murdering an innocent man in his own home is not.
If it is legal to shoot an American because they legally posses a firearm (on their own property!), that should apply to strangers with badges that are walking around on your property uninvited.
In the US, the police can, will, (and regularly do!) walk up to your house and shoot you dead for any reason, or for no reason at all. Behave accordingly.
ACAB.
Q: What's the collective noun for "bad apple"?
A: A precinct
(And if you're even thinking of responding with "But this was a tragic accident!".... this is an "accident" that keeps happening over, and over, and over, and over. Innocent Americans dead at the hands of cops, and cops punished lightly if at all)