Which street gang became the first to use murder as a membership requirement?

The Whyos gang is historically recognized for establishing a requirement of murder for membership. This notorious gang operated in the late 19th and early 20th centuries, primarily in New York City, and was known for its violent criminal activities. By incorporating murder as a membership criterion, the Whyos not only sought to promote loyalty and fear among its members but also aimed to attract individuals willing to commit extreme acts of violence, further solidifying their reputation for brutality.

The other gangs mentioned may have engaged in violence and criminal activities, but they did not have the same explicit membership requirement based on murder as the Whyos did. This requirement set the Whyos apart and reflected the gang's embrace of extreme violence as a method to fortify cohesion and enforce obedience within their ranks.