As Mr Beck was marched away, someone briefly unfurled a rainbow-coloured banner - adopted by gay rights groups as a symbol of pride.

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But that looks optimistic as pressure groups have made the throwaway bag a symbol of the throwaway society and even the Daily Mail is campaigning to get them banned.

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The Future of Privacy Forum is one of the groups that pushed for and helped design the symbol.

FORBES: Online privacy gets its very own symbol