Robert Kennedy was pro-war? I wouldn't consider JFK "anti-war", either, but I certainly don't think he was a "pro-war" hawk.
Overall, I thought the video was pretty good and, like you, I could nitpick on a couple of items in it, but that doesn't discredit it's entirety. I guess I've never been one to "throw the baby out with the bathwater".
However, I don't think it went far enough. Many more examples could've been shown. NYC Journalist, Dorothy Kilgallen, for instance. Killed in 1965. She was investigating the JFK investigation and was the only journalist to have privately interviewed Jack Ruby. Like Breitbart, she hinted to her audience what she was about to expose. Like Breitbart, she was going to publish the results of her investigation in her next article. But that never happened. She was found dead in her apartment and all of her research was "lost". Her death remains "undetermined" and the police refused to follow up on it.
And Karl Rove is a free man? Still living? He should be "enjoying" prison time right now. Or, found guilty of treason and...well, you know. But that's not how things work in America today, or over most of the past 60 years or so.