Asshattery is a national pastime. We have people from all walks of life walking around being complete and total douches. I am not one of them.
I can not like someone, and am and still polite. Others, go all ape-shit because their gal lost a fucking election and are conspiring to be assholes because ... well THE RUSSIANS HACKED THE ELECTIONS!!!!! and our society (especially the left) is cheering them on.
So, when you start talking about "Manners", lets talk manners. Manners is caring more for others than yourself; they are selfless. Bradley Manning would be more courteous if he didn't force his particular mental disorder upon everyone else around him. Yeah, it sucks to be different. Trust me I know. But unlike others, I am not forcing anyone to call me anything other than what they want to call me, including asshole. Which I can be on occasion when people expect more from me than I am willing to give. But that is more of their problem than mine.
Social rules, which you end your comment with, are exactly what Chelsea Manning is trying to change. The whole LGBTQLMNOP crowd is all about changing "social rules" they don't agree with. So, in a nutshell, social rules are for controlling others, which is bad, unless they are social rules you like, then they are good. See, that is how hypocrisy actually works. Have a great day (I mean it)