Michelle Alexander just got a major "like" on social media. On Oct. 13, Facebook founder Mark Zuckerberg visited San Quentin State Prison, where Beat Generation icon Neal Cassady once served two years for selling cannabis.

Zuckerberg's visit was inspired by Alexander's book " The New Jim Crow" (2012), which examines racial injustice in America's legal system - especially the higher rates of incarceration that blacks and Hispanics face for the possession and sale of cannabis.

According to Matt Ferner of The Huffington Post, "While the U.S. accounts for just five percent of the world's population, it is home to 25 percent of the world's prisoners. Nearly 40 percent of all prisoners are black."

Zuckerberg did some headhunting by touring the penitentiary's computer coding classes. In an exchange on Facebook regarding his post, the 31-year-old billionaire noted, "We actually don't ask about your criminal record on your job application here at Facebook. That way we don't bias against people who've made a mistake in their past, and we can help give them a second chance."

Meanwhile, prominent Facebook investor Sean Parker is helping reform America's prison population by combating cannabis laws. Parker (played by Justin Timberlake in The Social Network) has become a driving force behind California's legalization movement.

Together, they could help recreational cannabis consumers find jobs and avoid jail.

h/t SF Gate, Huffington Post, Monterey County NORML