This paper offers a new way of conceptualising how intersectional solidarities are actualised. It recounts and theorises an outbreak of radical internationalism, when working class struggles in Britain and South Africa were unexpectedly linked. It examines how intersectional solidarity was materialised through a process of coming together against the architectural fabric of the South African Embassy and considers the interwoven temporalities that enabled this action to occur. On 31 March 1990, nearly a quarter of a million people demonstrated in London against the Poll Tax that was due to take effect in England and Wales the following day. On the day, the Metropolitan Police lost control of an already enraged crowd and provoked a large scale riot that engulfed the West End of London for several hours. In the midst of the riot, during a short retreat by the police, protesters took the opportunity to attack the South African Embassy in Trafalgar Square – many windows were broken and an attempt was made to set the building alight. Drawing on interviews with former anti-apartheid protesters who were present on that day (and who had concluded a four-year long Non-Stop Picket of the embassy a month earlier), this paper explores and analyses their memories of that unexpected moment when their previously symbolic call to ‘burn it down’ was (almost) materialised. In doing so, it contributes new ways of conceptualising the spatiality and temporality of intersectional solidarity.