How did john brown affect the militia system in the south?

John Brown was an abolitionist who believed that military means would bring an end to the slavery

Explanation:

He was involved in the conflict that arose during the time of bleeding Kansas. There was a huge conflict among the people whether Kansas must be a free or a slave state and the conflicts that arose thereafter turned violent. John brown was an American adversary who believed that slavery can be terminated through violent means and killed five civilians who supported slavery.  

This was considered controversial as he resorted to the violent means to end slavery. Only a few slaves and African Americans supported John Brown, later the revolution which is led by him lost its significance. Though he was considered to be a martyr in abolishing slavery he was also considered to be a villain as he resorted to the killing and murdering people who supported slavery.