Protesters should absolutely hide their identity as much and as often as possible … they are literally putting their lives on the line. They have no recourse if they are identified, the government can literally go after them once identified … shut them down financially, legally and take their communications and connections on the internet and go after them in the night, raid their home and arrest them, or after the people associated with them.

Any government official or law enforcement person should never have the need to hide their identity. As soon as they do, it is basically a message to everyone that what they are doing is not legal, moral or justified … and they know its wrong, which is why they hide.