Discrimination In The Name Of Equality
You don't fight discrimination with discrimination: discriminating against individuals to supposedly "heal" discrimination against groups, which is the nature of "affirmative action" (or as one might call it, benevolent prejudice in action).

First, from Wikipedia the ballot measure to do exactly that by reversing Prop 209::

Proposition 16 is a California ballot proposition that will appear on the November 3, 2020 general election ballot, asking California voters to amend the Constitution of California to repeal 1996's Proposition 209.

Proposition 209 prohibits the state from discriminating against, or granting preferential treatment to, any individual or group on the basis of race, sex, color, ethnicity, or national origin in the operation of public employment, public education, or public contracting.

Therefore, Proposition 209 banned the use of affirmative action in California's public sector.

Michelle Steel writes at the OC Reg about disgusting California ballot measure, Prop 16, that reverses the state's path toward true equality -- merit-based rather than sex- and color-based assessments of individuals:

Over two decades ago, California set a clear standard by passing a constitutional amendment that put the state on a path to towards true equality.

Proposition 209, passed by voters in 1996, adopted language from the 1964 Civil Rights Act to prohibit the state from discriminating against or giving preference to any individual or group on the basis race, sex, color, ethnicity or national origin in the areas of public employment, public contracts and public education admissions.

The Californians who voted to pass Prop. 209 knew that discrimination, though long entrenched in our society, is against the fundamental values of American culture. Prop. 209 applied to California the essence of Martin Luther King Jr.'s dream of a nation where individuals would be judged not by the color of their skin but by the content of their character.

Both morality and data prove that this merit-based approach is working in its most controversial application - college admissions - and aiding minorities in the state. Hoping California voters ignore this, politicians in Sacramento recently approved Assembly Constitutional Amendment 5 (ACA 5), a ballot initiative repealing Prop. 209 and ensuring a return to racial discrimination.

Prop. 209 allows college applicants to be judged by their accomplishments in high school or community college in the admissions process, not by the color of their skin, where they come from, or by their gender. Because of this, we have seen an increase in both enrollments and graduation rates in California's public colleges and universities.

...Proposition 209 did not eliminate discrimination altogether in California, and we still have much to do to fight racism. Yet the success of Prop. 209 toward race-neutral opportunity for all is anything but a "stain."
The text of Prop. 209 reads: The state shall not discriminate against, or grant preferential treatment to, any individual or group on the basis of race, sex, color, ethnicity, or national origin in the operation of public employment, public education, or public contracting.

And it works, even though there is still more to do.

What we cannot and should not do, in our ultimate quest for equality, is to reinstate racial discrimination. Particularly when we've seen that a policy of non-discrimination is actually lifting up Black, Hispanic and Asian Americans.

Eliminating Prop. 209 will divide us further along racial lines. It will reverse decades of merit-based advancement for all and promote unequal treatment based on race in California. This division is exactly what we seek to eliminate in the United States.