The fight over gay marriage resumes in California today with Perry v. Schwarzenegger ... and you may be able to watch it on YouTube, tonight. Two same sex-couples are suing the enforcers of California's Proposition 8 on grounds that the gay marriage ban violates their federal constitutional rights. This might lay the groundwork for an appeal to the U.S. Supreme Court. The trial will be the first federal court case in the U.S. to be broadcast on YouTube. Kenji Yoshino, professor of law at New York University, has been following the case.