For 27 years there was no arrest in the shooting death of rapper Tupac Shakur. Slate’s Joel Anderson explains how that finally changed.

This episode was produced by Hady Mawajdeh, edited by Matt Collette with help from Siona Peterous, fact-checked by Laura Bullard, engineered by David Herman, and hosted by Sean Rameswaram.

Transcript at vox.com/todayexplained

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