Just because a man is holding a sign that reads 'Class war, Wanker' doesn't mean that he is part of the 99% protests in London, England


Context: "A young man with brown hair, a black shirt, and a backpack is holding a sign that reads "Class war, Wanker."" Claim: "The man is part of the 99% protests in London, England."
Considering the context, is the claim true, false, or unknown?