Some say it was the turning point in his nomination others say he just wasn't that popular from the very start. He will be remembered for that unusual scream after getting all worked up in a "fire em' up" speech after loosing in Iowa.
TV was more important in 2004 and the news media, SNL, late night, and the likes of John Stewart would not let it die.

Here is my question: This year is there anything a candidate could say, scream, tweet or do [short of criminal behavior] that could make them unpopular overnight?


Here is a link to a very short movie on the subject.
The Dean Scream: What Really Happened | FiveThirtyEight
*Dean ran because he didn't think politicians were seriously doing their job.
He was running on healthcare, economic opportunity, and ending the Iraq war

Dean told people he was the only one running that year that voted against the war in Iraq. And he raised most of his campaign money online.