Sundown towns existed in Southern California and were enforced by the Klan.

Evidence

Like my little cousin didn’t get arrested and roughed up by the Klan to the point of ending his athletic career just for staying out too late on the south side of Fontucky, one of SoCal’s many sundown towns, without his school ID. — Nikole Hannah-Jones et al., The 1619 Project, 1181

Categorization

• QUESTION: How many sundown towns were there in Southern California, and what documentation exists beyond this memoir? Worth checking against the sundown-town historical literature.
• XREF: Connects to the reframing thesis that American geography outside the South was also racially exclusionary in design, not just tolerant of it. — connects to: Most Klan coercion in the twenties targeted fellow native white Protestants — John Higham, Strangers in the Land: Patterns of…, 1774