It's finally Inauguration Day for President-elect Donald Trump but activists across the globe are having none of it.

SEE ALSO: 'Angry Women' display powerful protest art during Trump's inauguration week

Displaying messages of positivity on bridges, protesters are expressing solidarity with migrants and the need for equality.

Trump has promised to build a wall across the Mexican border to curb illegal immigration.

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Here's a selection of images from the "Bridges not Walls" protest:

In London, a banner reading "Build bridges not walls" was draped across the iconic Tower Bridge.

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Campaigners also held up letters reading "Act now!" as a speedboat with a black flag reading "build bridges not walls" raced down the River Thames

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Protesters also unfurled banners on Westminster Bridge -- saying "Migrants welcome here" -- on Waterloo Bridge, London Bridge and on Millennium Bridge:

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Similar protests took place in other UK cities and towns including Brighton, Birmingham, Glasgow, Edinburgh and Totnes:

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Protests also took place in Paris:

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"We won't let the politics of hate peddled by the likes of Donald Trump take hold," said Nona Hurkmans of Bridges not Walls.

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