Every Californian angry about this, with a front yard or a front window, should just put up a nativity scene.
All those in a church should try to organize one for their church; particularly a live nativity, which is lovely.
Also private groups/organizations.
We could have more nativity scenes and re-telling of the nativity story than ever in history if we put our anger into positively just taking care of business.
Don’t rely on the state to help you spread the gospel. Utilize it if you can, but don’t waste energy on it.