sentences:  During the 1960s he continued his criticism of what he saw as the overregulated Swedish economy.In 1966 he authored the book "Säkerhetspolisens hemliga register – om åsiktsfrihet och åsiktsförföljelse" ("The Secret Registry of the Security Service – On Freedom of Opinion And Political Persecution") together with Janerik Larsson.This book led the Swedish Security Service to classify him as a "dangerous leftist activist" ().