what to learn for real world fighting

[Verceti]

"dont you teach them knife fighting, teach them to kill. that way when they meet a son of a bitch that studied knife fighting.. theyll send his soul to hell"

[tankerlife4ever]

Krav Maga...Israeli defence force fighting system...think caught without a gun and surrounded by people who want to drag your torso naked down the street. Truly real world self defence survival