Duterte signed a new law in April that outlaws catcalling, public leering, intrusive gazing, stalking and unwanted exposure, as well as commentary online.
Penalties include fines and imprisonment.
The law also requires bars, restaurants, movie theaters and other businesses to install signs that include a hotline number for reporting sexual harassment.
“Duterte is the misogynist-in-chief,” said Inday Espina-Varona, journalist and founder of the I am Woman campaign who is also a big fan of the Guerrilla Girls. “I don’t know how this could have happened.”
The Gabriela Women’s Party, a leftist political group in the island nation, said in a statement that Duterte “represents the single most brazen violator of the law’s intent with his staple macho-fascist remarks.”
“I wish we’d thought of enlisting a fascist dictator,” said one Guerrilla Girl who has been protesting anonymously since the beginning. “It’s like our 35-year effort has been for nothing.”
The anonymous group of women who started their campaign in the mid 1980s dressed in gorilla masks admitted defeat earlier this year after artists in Amsterdam floated “a flock of giant breasts” down the city’s famous canals.
“We’re still feminists,” mumbled one Guerrilla Girl through her mask. “We’ve just given up fighting the male gaze.”
Duterte signed the act in April but officials only released a copy of the law on Monday.