Activists are refusing to leave the Venezuelan embassy in Washington, DC which they've been occupying since President Nicolas Maduro's diplomats were expelled last month.
The protesters say the US is trying to engineer a coup against Maduro.
That's an accusation that supporters of opposition leader Juan Guaido strongly reject.
They say Maduro's 2018 election victory is in dispute.
The Venezuelan counterprotesters have surrounded the embassy, trying to pressure those barricaded inside to leave.
Al Jazeera's Heidi Zhou-Castro reports from Washington, DC.