While I disagree with his tone at several points, this is a legitimate criticism of open carry. He doesn't like it, it's my right, and arrest the criminals. Decent editorial for a college kid. Ties him with the President's known college writings, one. More accurately the only one of the authors I've read, he probably has more.
No, it is not.
You don't suppose that the cops are going to be arresting each other, do you? That is because they presume that another uniformed officer is justified in carrying his weapon openly on his hip. All the cops have to do is recognize that every law-abiding citizen is justified in carrying his weapon openly on his hip also.
It's really not that complicated. Just treat every law-abiding citizen with the same consideration that you would a uniformed cop.
It's about time that the cops started recognizing who is the master and who is the servant.