I can't imagine going to my local hall and marching with a protest sign.I think it would just convince the dubs there that I was under Satan's spell.
Others can't imagine why they should not march with the sign.
OTWO, I feel the same way as you. It would be completely ineffective and not something I would be interested in doing.
I have noticed that others are getting involved in other ways which I believe would be more relevant. The UK charity commission thread recently is a good example.