Exploring online criticisms of the “take the knee” protest during “Euro 2020”, this article examines how alt- and far-right conspiracies were both constructed and communicated via the social media platform, Twitter. By providing a novel exploration of alt-right conspiracies during an international football tournament, a qualitative thematic analysis of 1,388 original tweets relating to Euro 2020 was undertaken. The findings reveal how, in criticisms levelled at both “wokeism” and the Black Lives Matter movement, anti-white criticisms of the “take the knee” protest were embroiled in alt-right conspiracies that exposed an assumed Cultural Marxist, “woke agenda” in the tournament’s organisation and mainstream media coverage. In conclusion, it is argued that conspiratorial discourses, associated with the alt-right, provided a framework through which the protest could be understood. This emphasises how the significance of conspiracy functions to promote the wider dissemination of alt-right ideology across popular cultural contexts, such as sport.