Identifying and stopping the dissemination of fabricated news, hate speech, or deceptive information camouflaged as legitimate news poses a significant technological hurdle. This book presents emergent methodologies and technological approaches of natural language processing through machine learning for counteracting the spread of fake news and hate speech on social media platforms. Covers various approaches, algorithms, and methodologies for fake news and hate speech detectionExplains the automatic detection and prevention of fake news and hate speech through paralinguistic clues on social media using artificial intelligenceDiscusses the application of machine learning models to learn linguistic characteristics of hate speech over social media platformsEmphasizes the role of multilingual and multimodal processing to detect fake newsIncludes research on different optimization techniques, case studies on the identification, prevention, and social impact of fake news, and GitHub repository links to aid understandingThe text is for professionals and scholars of various disciplines interested in fake news and hate speech detection.