Two decades after California Republicans backed the anti-immigrant Proposition 187, the party holds virtually no power in the 39 percent Latino state. And Trump isn't helping.
It's the latest outbreak of violence outside a Trump rally, this time in a border city that sees tens of thousands of people legally cross between Mexico and the US every day.
As the tone on the presidential campaign trail has gotten more heated, some of its darker rhetoric is filtering down to high school sports.
The first-in-the-West contest will be a tie-breaker for Sanders and Clinton who are both vying for the Latino vote.