Fashion statement: clothing as expression worthy of protection

Eoin O'Dell has a nice piece on cearta.ie regarding the risks of expressing oneself sartorially, at least in the US, and the protection that might be afforded by rights instruments. It brings to mind interesting questions that trouble me from time to time: why are media products often considered to be 'special' artefacts in political debate because of their contribution to 'culture'? Might not a ceramic jug, ornate mirror, or ragged trouser similarly express something of value?