I don't think those who are against the "Occupy" protests are against demonstrations. There wasn't much outcry when the tea demonstrations took place. Those who criticize the "Occupy" demonstrations are expressing their distaste for the message.
Whether you agree with the occupiers or the tea partiers or neither, I hope you agree that all of them and all of us have the right to assemble and speak in public places. God help us if those rights are lost.