I disagree with the assertion that it hurts the cause for the following reasons. First, the fact these guys would take time off work shows their dedication. Unlike MMM, whose demonstrations are largly made up of housewives, professional welfare recipients, and college students, who for the most part have some free time and/or flexible schedules, the people you see demonstrating here probably had to take off work to protest. This shows their commitment to the cause and makes much more of an impact than misinformed college kids with green hair who pay no income taxes.
Secondly, the politicians are most afraid of middle class working people because these people are the voters, they are paying a hell of a lot of taxes, and it just about takes a revolution to get these people to raise their voices in protest. Look around. How often do you see working guys take time off work to protest? Maybe union guys, but certainly not non-union workers.
Perhaps they should have organized it better and maybe they will next time. But I'm damn proud of these guys either way.