Self-imposed lockdowns, surveillance fears and forced separations: life for California’s undocumented farmworkers

Undocumented migrants form the backbone of the salad bowl of the world' - Trump's crackdown has led to hyper-vigilance

Driving into the Salinas valley, about two hours south of San Francisco, hand-painted signs fly by, advertising cherries, pistachios, avocados and garlic.

From above, the valley looks like a quilt stitched together out of a thousand shades of green - the fields of lettuce, spinach and strawberries that give the region its nickname, the salad bowl of the world".