If we don’t cut carbon emissions, your mother will be raped. This is the deranged prediction of Roger Hallam, the weird-beard co-founder of Extinction Rebellion. Eco-doomsters used to say the ice caps would melt and polar bears would perish unless we all went green. Now they’re upping the ante. Now they’re prophesising gang rape, murder and war if you don’t shrink your eco-footprint.