$1:
Law enforcement, which has generally opposed open carry (laws)...
Fuck 'em! They're supposed to enforce and obey the laws that the people authorize and if they don't like it then turn in your fucking badges and find another fucking job.
Period.
What else is it that cops don't like?
They don't like it when people video record their misbehavior even though that's also a protected right.
They don't like it when they stop someone and demand ID and the citizen first asks them what's their probable cause for asking for ID.
They don't like it when they beat someone up and that person files a complaint about it.
They don't like it when they steal money from people at gunpoint in the abuse of asset forfeiture laws and the people come back and sue their asses.
They don't like it when they come up on people who aren't intimidated by some shaved-head, roid-raging anger-monkey with a badge and a gun.
And they have the utter gall to swear an oath to defend and protect the Constitution of the United States from all enemies, foreign and domestic only to hold that very same Constitution in contempt.
Seriously, any cop who can't do their job and respect the rights of the people - no matter how hard that makes the job - needs to fuck off and get out of the way for someone who CAN do the job.