Let me give an example: In my country, when a motorist witnesses an accident with injured people, he is required by law to provide first aid to the injured and call additional help to the scene. Needless to say, first aid education is required when applying for a drivers license here.
Some people will help if they see injured people on the side of the road and some people will not. I call the latter cowards and they are doing harm by not providing timely help or even call for professional help. People die because other people look away and ignore them.
Now, I think what ioerror is doing is brave, and everybody not doing the same or more is a coward (including me, I'd like to do more, yet all I can do is trying to make information available to as many people as possible). He does not look away.
Bradley Manning did not look away. He is the one who is the bravest man in this equation. He knew what he did would have consequences, yet looking away while innocent people get mown down video-game stile needs a special kind of ignorance and evil to be able to ignore or even call it OK.
The US government is able to do that at the moment including large parts of the population. Cowards, all of them.