[Solved] What must be included in an effective knowledge management system? Streetwalkers: Prostitutes who predominantly find their customers by walking in public places, often on the streets. Sex Workers: Individuals who engage in providing sexual services in exchange for money or goods, a practice that varies widely in legal and social acceptance. Child Pornography: Illegal material that depicts minors in explicit sexual situations, which is prohibited and punishable by law. Erotica: Literature or art that focuses on sexual love and desire, intended to arouse sexual feelings while being aesthetically pleasing.