In many countries, protesting against people or establishments is not allowed, on the other hand, the United States of America has shed blood through its boys (and girls) in the military to retain that right. If you know how to protest, especially if it is a peaceful protest, you will probably not be interrupted by members of the police services. If violent protests become the order of the day, you might as will get used to the fact that some will end up behind bars for their participation. Many years ago, it was very common to witness, one anti war protest after another, however, today the opportunities to protest are a whole lot more. When it comes to protesting, itineraries will vary and depending on the cause, like the one on wall street, the outcome will differ, it is usually up to the organizers, who generally have the event pre-planned.