In all those videos I've posted, from all those protests (with the exception of one), I don't see anyone in the crowd who denounces the violence, hate, or racism that's going on around them. I not only don't see organizers of these events publicly discouraging this type of behavior, but they seem to encourage it based on their signs, words spoken by their leaders/featured speakers, and by their actions. Civil disobedience even seems to be part of the plan in some cases.
Where the Tea Party goes out of their way to disassociate themselves from far right anarchists, supremacists and anti-government militia groups who might also believed in their small government/less taxes message, union/liberal protest groups seem to welcome far left anarchist, communist, socialist, anti-Jew and anti-American groups with open arms. When those of us on the right say we deplore racism, are against violence of any kind, and say we don't hate Obama or liberal politicians (we just oppose their policies), our conduct in protest reflects that.
What bugs the hell out of me, is those on the left will say that those people depicted in the videos "don't represent them", and that the various communist, anti-American and far left fringe groups that attend and sponsor their protests, also don't represent them, yet they do nothing to discourage the actions of those people and welcome the participation of those fringe groups with open arms.
If you all really oppose the violence, the hate, the civil disobedience, the calls for revolution, and many of the anti-American/communist organizations that participate in, and sponsor your protest functions, then prove it by doing something about it. Put a stop to the threats, bullying tactics and the blatant disregard for civility and the rule of law that's become so synonymous with liberal dissent.