Katie Canales/Business Insider
Thousands gathered in Oakland, California, Sunday to witness California Sen. Kamala Harris' official bid for the 2020 presidential election.
- California Sen. Kamala Harris officially launched her campaign for the 2020 presidential election with a massive rally in her hometown of Oakland, California, on Sunday.
- Thousands showed up to witness the first-term senator's speech.
- She advocated for a reformed criminal justice system, immigration reform, and a solution to the gender pay gap, among other issues.
- Business Insider was on the scene. Here's what it was like at the rally.