This demonstration has been called by the Stop the War Coalition this Saturday. The political basis for this is fundamentally inadequate and somewhat evasive, as it is not simply ‘Iraq’ or ‘Syria’ that is under attack here, but rather the new radical Islamist polity that calls itself the ‘Islamic State’. Hardly surprising given the influence of social-pacifism on the left today. Still, it is a start and all anti-war activists and socialists should be encouraged to participate, not to accept these politics, but to find ways to go beyond them toward the genuine communist politics that we need.