See my Post #129What do you mean by hurt physically, which is rarely the result of a boycott or protest? Vandalism, physically attacking someone or threatening to physically harm a person or their property are all already illegal.
Protests and boycotts are clearly protected first amendment activities. People have a right to say what they want, and others have an equal right to express their disagreement with a protest or by refusing to do business with them. There is likely to be a loss of business from a protest or boycott (or a gain in business if there is a backlash against the boycott as in the case of Chick-A-Fil-A), but no one is guaranteed other people's continued patronage of their business. Customers have a right to know what they are supporting when they do business with a person or company. We all have a right to express our views, but we have no right to be protected from completely legal and ethical actions such as boycotts in response to those views. Protests and boycotts are non-violent ways and harmless to express opinions that are essential to a free society and representational democracy.