A video of a group of women singing which was shot at the Women's March in Washington DC on Saturday has gone viral.

The clip shows a group of women in pink hats gathered in a circle to sing and harmonise on an original song, 'Quiet', which they learned in the weeks leading up to the march despite not meeting beforehand.

The song is being claimed as an 'anthem' for the march and the #icantkeepquiet movement, and was written and led by Los Angeles musician MILCK. She formed the #icantkeepquiet choir, comprised of 26 women from LA and DC, and they performed 'flashmobs' of the song all around the city on Saturday.

One of them was captured below, and you can also hear the original below that: