Rival demonstrations are taking place in Venezuela in response to calls by opposition leader Juan Guaidó and President Nicolás Maduro.
In the capital Caracas, some supporters of Mr Guaidó clashed with police and were dispersed with pepper spray.
Mr Guaidó declared himself interim president on 23 January and has been at loggerheads with Mr Maduro ever since.
Today’s protests follow widespread power cuts that have affected much of Venezuela since Thursday.
Mr Guaidó, who leads the opposition-controlled National Assembly, has been recognised as interim president by more than 50 countries. However, Mr Maduro retains the support of the military and close allies including Russia and China.