Today City Attorney Dennis Herrera today, along with Los Angeles City Attorney Rocky Delgadillo and Santa Clara County Counsel Anne C. Ravel, filed "a petition for a writ of mandate with the California Supreme Court to invalidate Proposition 8, an initiative constitutional amendment that intends to strip gay and lesbian citizens of their fundamental right to marry in California."

That is to say, it's on. In Herrera's own words:

The issue before the court today is of far greater consequence than marriage equality alone ... Equal protection of the laws is not merely the cornerstone of the California Constitution, it is what separates constitutional democracy from mob rule tyranny. If allowed to stand, Prop 8 so devastates the principle of equal protection that it endangers the fundamental rights of any potential electoral minority -- even for protected classes based on race, religion, national origin and gender. The proponents of Prop 8 waged a ruthless campaign of falsehood and fear, funded by millions of dollars from out-of-state interest groups. Make no mistake that their success in California has dramatically raised the stakes. What began as a struggle for marriage equality is today a fight for equality itself. I am confident that our high court will again demonstrate its principled independence in recognizing this danger, and in reasserting our constitution's promise of equality under the law.

Looks like it's going to be a long battle ahead of us. Stay tuned. (To read the press release in its entirety, follow the jump.)