New urban tribe: INCEL
INCEL (union of the words Celibate and Involuntary) is the new term created by the heterosexual masculine gender to describe a misogynistic movement that is characterized by feeling and expressing hatred, first towards women for not being attracted to these young people and also to all those who are "lucky" to have a healthy sex life, who have not had as much feeling for those frustrated at the sexual and social level.
Source
It is a movement led by Elliot Rodger who, in 2014, murdered 6 people in a university camp and then committed suicide.
This boy was followed by Chris Harper-Mercer with 9 murdered women; Alek Minassian, among others.