Anti-riot policemen arrested UP professor Randy David and AKBAYAN leader Ronald Llamas for leading an estimated 5,000 protesters in a march to the EDSA Shrine in commemoration of the 20th anniversary of the four-day EDSA People Power uprising.
An ANC report said policemen stopped David's group, composed mostly of students, outside police headquarters in Camp Crame. Police grabbed David and Llamas and brought the two to Camp Karingal, the report said.
David earlier said he is willing to be arrested and detained for staying at the EDSA Shrine.
Police earlier dispersed members of left-wing groups and pro-Estrada forces holding a demonstration at the EDSA Shrine, site of the historic people power uprisings.
Presidential Chief of Staff Michael Defensor earlier said the administration has cancelled all rally permits after the discovery of a plot to grab power from President Arroyo on Friday.
Gabriela Women's Party Rep. Liza Maza said the PNP's decision to disperse the rallies has no basis because the people were only exercising their rights to a peaceful assembly.