if this had anything to do with anything but guns everyone would be backing this guy for government overstepping their bounds

but because it involves a gun everyone gets their panties in a bunch ... a gun is only dangerous in the hands of a dangerous person. and theres no reason to suspect someone is dangerous or has ill intentions simply because they posess a gun

so long as he was obeying all the laws where he was (which as far as we know he was) there was NO reason to arrest him, the only thing they should have done if they truly felt he was a threat was to escort him outside their so called perimeter area ... there was no justification for arresting him. especially not on the grounds that he had the gun where it was lawful for him to carry