I wrote about the emergence of the Black Power movement in the UK, for Timeline. Specifically, about a small set of images of one protest and associated ephemera:

At the start of the 1970s, the Black Panther movement in the United States was both well established and well organized. It was also well feared by the authorities. By contrast, black activism in the U.K. was young, with barely a toehold on power. The trial of the Mangrove Nine, in 1970, changed all that.

and

According to the National Archives, photographs such as the ones you see here were “used by the police to suggest that key allies of the Black Power movement were implicated in planning and inciting a riot.”

Read more: When cops raided a hip 1970s London cafe, Britain’s Black Power movement rose up