Tell me, what does showing your face add to the protest, other than making it easier for opposing groups to target you?
No, numbers make people take a protest seriously.
If you are discounting a cause based on whether the supporters show their faces or not, that’s just you looking for an excuse.
In my experience if there is a masked protest here in Sweden, it is beacuase people want to riot, even if the initial idea was not to riot, the concept of a masked protest will attract more people who will riot.