I'm not going to defend the guy on account there are a lot of people out there that are mentally one pebble short of a total meltdown/cataclysm. Some philosophers will argue that all people are inherently evil. If that were the case, people in power like politicians would start locking up as many people as possible because the average citizen be a threat to him or her.
A lot of people are dissatisfied with their government and outside of voting, the elected official (whether they voted for them or not) sits cozy in their seats until the next term.
I don't expect the common man or woman to really know or respect common discourse if they feel that their representing politician is a crook or if someone is not getting represented.
A public YouTube video should be considered to some degree a forum of symbolic speech as the media, direction, and audience is so broad... it's not like pasting a threatening letter together with magazine clippings covered on dog shit saying you're going to kill him/her.
I think without a doubt, a YouTube video will make you stand out as a threat above instead of a grandma next store shaking her fist at CNN on television and wishing anarchy.
I guess you really got to watch what you say.