A not very well regulated militia
By 
Message board tips for aspiring mass murderers.
Background on the 4chan board where this thread appeared:
The board is famous for its stories of social awkwardness and nostalgia of the simpler times, as well as discussion of abnormal social behaviour. It is heavily used by NEETs[4] (Not in Education, Employment, or Training) who regret their life decisions and hold anger and disdain over males with active social and sexual lifes. it also containts [sic] Constant discussions about relationships with females and family. Dispite [sic] all of this, the board holds heavy pride in its own nature, with heavy hate over normies or “Normalfags” who do not understand their culture as well as constant calls for a “Beta Uprising”. [T]his has spawned different memes.