Abstract
This article examines the lexical memory work performed by the British New Left as it differentiated itself from the organised labour movement post-1956. It argues that activists use memory to reframe the meaning of keywords in the 'protest lexicon', and that this is an important, though usually implicit, activist cultural practice. Based on previous work in conceptual history and cognitive science, it begins by situating lexical memory work as an activity on the border between narrative historical memory, semantic memory and implicit collective memory. It then discusses the resignification of the word solidarity during the long 1960s, when lexical work was a key feature of the New Left's apostasy from traditional Marxism. Finally, it examines the case of the British heterodox Marxist journal, Solidarity, outlining how it intervened in the protest lexicon by wrenching free the keyword solidarity from previous meanings, changing its historical referent and, ultimately, resignifying it.