Hundreds of Filipinos have rallied in stormy weather against President Rodrigo Duterte's approval of dictator Ferdinand Marcos' burial in a heroes' cemetery.

A left-wing group is also planning to ask the Supreme Court to stop what it calls "grave injustice" to thousands of human rights victims.

Police say about 1,500 protesters carrying a large streamer that read "Marcos not a hero" braved the rains and wind at Manila's seaside Rizal Park to call on Duterte to reconsider his decision. They will launch a signature campaign to try to stop the burial, tentatively set for next month.

Sen. Risa Hontiveros, who joined the protest, says she has filed a Senate resolution opposing a hero's burial for Marcos, who was overthrown in 1986 and died in U.S. exile three years later.