Venezuela's President Nicolás Maduro has vowed to defeat a "crazed minority" that wants to remove him from power, ONAreports citing BBC.
In a challenge to opposition leader Juan Guaidó, he called for "anti-imperialist marches" on Saturday to coincide with anti-government protests.
Mr Maduro's comments were the first since Mr Guaidó defied him and returned to the country on Monday.
Separately, the US said it was considering imposing new sanctions to pressure Mr Maduro to give up power.
The US envoy for Venezuela, Elliott Abrams, said it was hard to see a role for Mr Maduro in future democratic elections.
"If he wanted to build a democratic Venezuela, he had the opportunity to do so, but he did not," Mr Abrams said.