In this same allegory, Plato also mentions how people who have made it into the light need to help those still in darkness to see the true good
And how those in the cave would rather kill those people trying to help them than believe the truth
Michigan's Ex-Gov. Rick Snyder Knew About Flint's Toxic Water—and Lied About It
From Vice of all places
3 days ago:
https://www.vice.com/en_ca/article/z3bdp9/michigans-ex-gov-rick-snyder-knew-about-flints-toxic-waterand-lied-about-it