The phrase "on the barricades" is often used to describe someone who is actively fighting against an oppressive force or taking a strong stance on an issue. Some synonyms for this phrase include "in protest," "in revolt," "taking a stand," "resisting," "demonstrating," and "rebelling." These words all convey a sense of defiance and determination, as well as an eagerness to fight for what one believes in. While the phrase "on the barricades" has a historical connotation related to the French Revolution, these synonyms are more often used in modern contexts to describe political activism and resistance movements.