Crying fetish – Dacryphilia
We cry if we are sad, hurt or too happy to express our feeling normally. In general we do not like to see others crying, tears are usually associated with sadness or injury, or loosing someone, it is not something we want to see. Some people enjoy making others cry, weird but is an existing fetish. Not necessarily to cause the other harm, the view of a beautiful, crying woman makes horny certain men.
Troll users have this habit also, to make a webcam model cry and they get turned on seeing it live on cam. Certain trolls use sites where they can talk to other trolls and they plan to make one certain performer cry on a webcam site.