Protesters set alight a US flag on Tuesday during a demonstration against US President Donald Trump's visit to the country to attend the 31st ASEAN (Association for Southeast Asian Nations) summit.
A day earlier, protesters burned an effigy of Trump in Manila.
The U.S. and Philippine governments said on Tuesday that Trump and Philippine President Rodrigo Duterte agreed to "continue mainstreaming the human rights agenda" in their respective countries during their meeting Monday in Manila.
A joint statement says the two leaders "underscored that human rights and the dignity of human life are essential."
The White House said earlier that human rights had come up "briefly" in the context of the Philippines' fight against illegal drugs.
Press Secretary Sarah Huckabee Sanders didn't say if Trump had been critical of Duterte's violent war on the illegal drug trade.
A spokesman for Duterte, however, said "there was no mention of human rights" and "no mention of extralegal killings."
He said there had been a "rather lengthy discussion of the Philippine war on drugs."