ProtectMarriage.com, the campaign favoring Proposition 8, the California initiative that would ban same-sex marriage, on Tuesday announced the launch of the official grassroots effort dedicated to supporting the campaign. The organization Catholics for ProtectMarriage.com is led by the Knights of Columbus, the California Catholic Conference and Catholics for the Common Good.

Catholics for ProtectMarriage.com is chaired by Bill May, who is also chairman of Catholics for the Common Good.

“Our strong Catholic faith teaches us the importance of treating all of God's children with love and respect, it also teaches us that marriage between a man and a woman is the foundation of the family - the first school of love, peace and justice," May said in a statement. "The ruling by the California Supreme Court nullifying the legal definition of marriage in state law was a shock to Catholics and other citizens who are concerned about how this will affect their own children's understanding of marriage.”

California Catholics reportedly played a large role in the passage of Proposition 22 in 2000, which defined marriage as being between one man and one woman. The proposition was approved by more than 60 percent of California voters.

Proposition 22 was overturned on May 15, 2008 by the California Supreme Court. The court’s majority found that domestic partnerships are not an adequate substitute for marriage.

Ron Prentice, chairman of ProtectMarriage.com, welcomed Catholics to the effort aimed at amending California’s Constitution.  “The fight to protect marriage is an all-encompassing effort that affects everyone in California," he said. "We're honored to have Catholics for ProtectMarriage.com offer us their assistance and to add them to our diverse list of supporters. We expect they will help us motivate a groundswell of support for Proposition and we're confident that with that support we will restore the definition of marriage in California, come November.”

Catholics for ProtectMarriage.com reportedly supports volunteer activities such as literature distribution and phoning in parishes and surrounding communities. Its website is located at http://catholicsforprotectmarriage.com.