Emil Nava's videos don't usually begin with a Parental Advisory, but it's necessary here. They don't come much bloodier than his video for Post Malone's rockstar. 

As white-suited Malone unleashes his Samurai sword on his black-suited enemies, this is Kill Bill with lots more gore, refracted through a lens of wooziness. An ultraviolent video that pulls no punches in its pitch-black humour.