With Academy Award-winner Sean Penn on hand to provide Hollywood star power, state Sen. Mark Leno launched a new effort Tuesday to recognize May 22 in California as Harvey Milk Day in honor of the slain San Francisco supervisor and gay rights leader.

In September, Gov. Arnold Schwarzenegger vetoed a similar bill, which would have made Milk’s birthday a “a day of special significance” in the state’s public schools. The governor argued that Milk’s contributions should be “recognized at the local level.”

But Milk’s cause took a huge leap in visibility when Penn received an Oscar last month for his portrayal of Milk, one of the nation’s first openly gay elected officials, in the movie of the same name.

With the Castro district camera shop owner’s name back in the headlines 30 years after his death, Leno, a San Francisco Democrat, is trying again with a new bill, SB572.

See Leno kicks off another try at Harvey Milk Day