The movement is young and it is small. It is growing. Violence against you when you have not been the provocateurs helps you to engage the 99%; violence and vandalism provoked by you will turn them away from you.Your long term strength will be your sheer numbers. Your weakness is that you are no match for the agents of the 1% who, given any reason to, will be brutally aggressive in repressing the movement. Success depends on playing to your strengths and downplaying your weaknesses.
Right now you morally have the upper hand. Use it for the many creative and clever ways to protest, like boycotting the big box stores for a day, moving money out of the big banks, sit-ins at state capitals and in Washington, marches, occupation in empty, neglected buildings. I am confident you can think up more.