sentences:  Written by sociologist Luiz Eduardo Soares and two BOPE officers, Major André Batista and Captain Rodrigo Pimentel, it provides a semi-fictional account of the daily routine of BOPE as well as some historical events, based on the experiences of the latter two.It describes BOPE as a "killing machine" and details an alleged aborted assassination attempt by some police officers on then-governor Leonel Brizola.The book was controversial at the time of release, and reportedly resulted in Batista being reprimanded and censored by the Military Police.