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Londoners love complaining about no end of things: the wait for a bus, the cost of rent, the no-bookings policy of their favourite restaurant. But when they think something seriously unfair is afoot, they know that kicking up a real fuss is important. Over the years, thousands of people have carried banners through the city's streets to make their voices heard and to effect change.
We've gathered 20 photos that span three centuries of protest, rallies and demonstrations in London – from universal suffrage to LGBT+ rights.