Most of the responses to the Cardiff petition follow a familiar liberal template for discussion on bans and boycotts. Whether the topic is Germaine Greer’s misogyny towards trans women, Chris Brown’s history of partner violence, Geert Wilders’ denial of the Holocaust, the Sydney Biennale’s links with the detention industry or Israeli universities’ role in the occupation of Palestine, it’s a template that pits vilification against free speech, asking: what is bad enough to justify a ban or boycott? What do you have to say or do to deserve silencing?