Gravity's Rainbow by Thomas Pynchon

This book contains: abortion, alcohol/abuse, alternate gender/sexual ideologies, animal cruelty/neglect (severe), anxiety, assassinations, bestiality, BDSM, body horror, blackmail, cannibalism (themes/threats), controversial commentary, cults and ideological zealots, dark content, deception, derogatory terms, demonic content, depression, divination, drugs/drugging, erotica, explicit sexual activities/nudity,  fetishism, gore, inflammatory commentary,  incest (themes), mental illness, molestation, murder, necrophilia (themes), patently offensive content, paraphilias, pedophilia, Pervasively Vulgar content,  profanity (multiple languages), prurient content, prostitution, rape, Satan worship (themes), self-harm, sex trafficking, smoking, stalking, suicide ideation, theft, torture, violence and Voyeurism. 

This book also contains attacks on western institutions and religion, exploitation of minors, extreme moral depravity and perversion, graphic violence and sacrificial rituals, radical political and racial revisionism, undermining of the nuclear family.