1. people who hold extremely radical left-wing political views, often more extreme than mainstream leftist or socialist positions
Usage: political term; plural form

Examples

• The ultraleftists criticized the moderate socialist party for being too willing to compromise.
• Some ultraleftists called for immediate revolution rather than gradual reform.
• The political spectrum included everyone from ultraleftists to ultraconservatives.
• Critics accused the ultraleftists of being unrealistic about their policy proposals.
• The ultraleftists formed their own faction within the broader progressive movement.
• Mainstream Democrats distanced themselves from the ultraleftists in their party.