Let us get this one minor issue or misconception out of the way…
Militias and gun ownership are both very much legal in these United States. It’s constitutional and both have justifiable reasons for their existence.
The obvious one is owning a gun to protect what’s yours. However, included in the 2nd Amendment is gun collecting and not for protecting.
Militias are legal for a whole other reason. Which at this point seems insane that it actually not only still exists, but how hardcore some of these militant mother fuckers can get. Again, legally and by none other than number 2 on the list.