Cheerleader
A cheerleader is a popular female role in modern society wherein women encourage men to brutally compete with each other in displays of aggression and might-makes-right malice for female sexual attention. Cheerleaders do not have to be literal cheerleaders, but can also be the women who offer their sexual intimacy to brutal and bullying men.
Cheerleading is an example of how pre-civilizational traits such as might makes right rather than altruistic behaviour are encouraged by females post-civilization and post-industry. Post civilization and post-industry, where the weakest males of society are used for societal cohesion and societal order, female cheerleading behaviour becomes maladaptive, possibility leading to a fisherian runaway or at least civilizational decline.