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Facebook founder Mark Zuckerberg is building a new social network, and this time it’s political.

While he’s better known as the hoodie-clad, Harvard dropout that launched a multi-billion dollar Internet company, Zuckerberg has emerged as a political player on the national stage.

After largely sitting on the political sidelines for a few years, the 29-year-old Facebook founder is using his clout as a top business executive and American success story to advocate for comprehensive immigration reform.

This week, Zuckerberg will publicly dive headfirst into the immigration debate that’s captivated Washington by joining forces with pro-immigration advocates outside of the tech industry.

On Tuesday evening in San Francisco, Zuckerberg will give introductory remarks at the premiere of “Documented,” a documentary film directed by Pulitzer Prize-winning journalist Jose Antonio Vargas that looks at the stories of young immigrants, known as “Dreamers,” who came to the United States illegally as children with their parents.

FWD.us, the political advocacy group that Zuckerberg co-founded and helped finance with his former Harvard roommate Joe Green, is co-hosting the event with Vargas’s immigrant rights group Define American.

The premiere is expected to draw a who’s who crowd of top Silicon Valley tech stars, as well as undocumented workers and Dreamers. The diverse audience is intended to show a united push for immigration reform.