Doesnt really bother me. It seems reasonable. If you're going out to protest something you shouldnt be afraid of revealing who you are.
I don't think that follows at all. If you are a protestor, sometimes it makes good sense to be afraid. Think of early union organizers. Think of Kent State. Think of Biko and Mandela in South Africa. Think of anti-Muslim marchers in England.
This law will not stand.