[1] Molyneux joined the International Socialists in Britain in 1968 after being radicalized by the antiwar movement and the revolt of that year.

In January 2009 he was arrested for organising a peace rally of 400 people against the Israeli attacks on Gaza.

(1983/85) started life as a long article and was later published as a short book and is perhaps his most widely read publication.

[citation needed] He wrote a weekly column, The ABCs of Marxism, published in Socialist Worker (UK) for almost 15 years some of which were collected into a book Arguments for Revolutionary Socialism (1987) and a pamphlet on The Future Socialist Society (1987).

[citation needed] After he moved to Ireland he edited the Irish Marxist Review and contributed to many issues.