This paper is the text of a keynote address given at the Education Studies Association of Ireland Conference on March 31st 2023. Drawing on diverse examples of reactionary politics in Ireland and the UK such as protests against queer-inclusive education, the maintenance of sectarian and Catholic majoritarian schooling, and the use of ideas of 'free speech' arguments to shut down anti-racist education, Karl Kitching argues for vigilance against the use of ostensibly liberal ideas about secularism, pluralism and free expression to damage collective solidarity, equality and democracy in education and wider society.