@p2501 to be fair, i don't see any reasoning on your side, and my point is already very clear, but since repetita iuvant:
a flag is a political symbol, that you like it or not. It represent a state. It's a national symbol.
you may interpret the swiss flag as a decoration, but for most of the people, it represent a political entity.
and in a context like the ccc, full of anarchist, somebody saw it as an oppressive symbol and they decided to react.
don't you like it? well, who cares.