A genre of movies most popular in the 1970s in which the lead character (or someone close to the lead) is victimized by a crime followed by an extended period of revenge upon the victimizer/s
Revengeploitation films feature three main attributes - the original crime - the victim or the victim's avenger hunting down the perpetrators - the ultimate vengeance
Some of the better known examples of revengeploitation would be Kill Bill, Death Wish and I Spit on Your Grave
Some people like revenge-themed movies like Old Boy but I prefer my revengeploitation films to be grittier and nastier. Give me Last House on the Left.