Hong Kong — During Hong Kong's "Umbrella Movement" of 2014, colourful Post-it notes of support covered a wall near where protesters camped in the streets calling for democracy in the Chinese-controlled city, becoming a symbol of the movement.

Today, similar sticky note mosaics have popped up on walls across the territory amid rolling protests against the government's handling of a controversial extradition bill, highlighting how widespread the demonstrations have become.

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