Shock value
Shock value (also called shock factor) is the potential of an image, text, action, or other form of communication, such as a public execution, to provoke a reaction of shock by eliciting sharp disgust, anger, fear, or similar adverse emotions. == In advertising == Shock advertising or shockvertising is a type of advertising generally regarded as one that "deliberately, rather than inadvertently, startles and offends its audience by violating norms for social values and personal ideals".