If you're at all familiar with hip-hop, you'd know that the voice has never shied away from  aggression; rappers channel their anger at living conditions, societal strains, economic strife, and sociopolitical angst into art.

But as with all art and all artists, expression for some would alternately be very real rage and aggression issues for others; and it could spill over in disastrous ways. Arrests and scandals have damaged lives, derailed their careers and tarnished legacies.

We've highlighted 20 rappers over the years who probably could've used anger-management at various points during their career.