Searching for Prop 14 brings up a couple articles from Time magazine about an older Prop 14 from 1967.
California: Proposition 14
The Supreme Court: Saying No to Proposition 14
That prop 14 was an effort to repeal the Rumford Act, a CA law that prohibited discrimination in housing. The far-right put together a law that was worded to sound like it would increase freedom, when, in fact, it would have allowed homeowners (and banks) to discriminate against minority buyers.
Even back then, the big bamboozle was in full effect.
W. Byron Rumford