At a protest in Louisville, Kentucky, last month – the city where Breonna Taylor was murdered by police on 13 March – Chanelle Helm, a leading organiser in the local Black Lives Matter group, turned to the white protesters with a loudhailer. ‘If you are going to be here,’ she said, ‘you should defend this space.’

The white protesters – most of them women – linked arms and formed a line between the black protestors and the police. Tim Druck, a local photographer, took a picture. It went viral after the Kentucky National Organisation for Women and other groups shared it on social media.

Another tweet that went viral at the end of May was by Virgil Cent:

I think the craziest thing I witnessed today on the frontlines was Black People yelling ‘White Shield’ when the police were blocking and pushing us back

The white people moved to the front and protected us + the cops became less violent like wow wtf