My intrusive and violent day dreams about murdering White women aren't really workable in reality..
At least without some tweaks.
Ideally the individual would have access to something like a lime pit or incinerator since depending on natures little critters to be your own garbage disposal takes forever and smells really bad too. See when you have no body you stop a major moving force in any police investigation of missing persons even they are even noticed missing at all. After all people just up and go missing all the time, especially White women.