By the age of three, Zayd Ayers Dohrn had learned to recognise plainclothes police officers and undercover agents in a crowd. Amongst the tell-tale signs were shoes that tended to be well-shined, even if the clothes were scruffy, and seemingly innocuous cars with a souped-up antenna on the roof. “I always knew that my parents were outlaws,” Dohrn tells me. “That was just a part of our understood background reality. They explained it to me by say…