Communist regimes have engaged in mass killings on a scale of millions of individuals.<ref>http://www.gmu.edu/departments/economics/bcaplan/museum/comfaq.htm#part3</ref> A work entitled ''[[The Black Book of Communism]]'' published by the [[Harvard]] Press focuses on the crimes, terror, and repression of modern Communist regimes over a 70-year period.<ref>http://www.hup.harvard.edu/catalog/COUBLA.html</ref> This book is fairly controversial partly due to the various estimates regarding the millions of people who died under communist regimes.<ref>Multiple references: | Communist regimes have engaged in mass killings on a scale of millions of individuals.<ref>http://www.gmu.edu/departments/economics/bcaplan/museum/comfaq.htm#part3</ref> A work entitled ''[[The Black Book of Communism]]'' published by the [[Harvard]] Press focuses on the crimes, terror, and repression of modern Communist regimes over a 70-year period.<ref>http://www.hup.harvard.edu/catalog/COUBLA.html</ref> This book is fairly controversial partly due to the various estimates regarding the millions of people who died under communist regimes.<ref>Multiple references: |