It seems Elizabeth Warren has no plans to back down from her calls to break up Big Tech. Recently, the presidential candidate took her message to the tech industry’s hub — San Francisco. At 4th and Townsend, Warren posted a billboard calling for Big Tech’s breakup. The location happens to be right next to the city’s Caltrain stop. For those who are unaware, that’s a station where a huge chunk of tech workers commute in and out of. In a tweet , Washington Post reporter Cat Zakrzewski described the location as “typically prime real estate for tech startup ads.” Warren is pictured on the billboard next to text that reads: “Break up Big Tech.” It also urges people to “join our fight,” by texting the number listed. Elizabeth Warren's campaign is out with a new billboard in San Francisco today about her plan to breakup Big Tech. It's near the Caltrain station at 4th and Townsend — typically prime real estate for tech startup ads. pic.twitter.com/jCpwhSsYQS — Cat Zakrzewski...