Venezuelans in poor areas blocked streets and lit fires during scattered protests across the country on Tuesday night, and two people were killed during the growing unrest in the midst of a crippling economic crisis.

In a worrying sign for leftist President Nicolas Maduro, groups in Caracas' traditionally pro-government hillside slums and low-income neighborhoods took to the streets, witnesses and opposition lawmakers reported.

Maduro foes were galvanized by footage of a crowd in the southeastern Bolivar state heckling and throwing objects at the closely-protected leader during a rally on Tuesday, before state television cut off the broadcast.