1. past tense of crusade; campaigned vigorously for a cause or against something perceived as wrong

Examples

• She crusaded for civil rights throughout the 1960s.
• The activist crusaded against corporate pollution in his hometown.
• He crusaded tirelessly for better working conditions.
• The senator crusaded for healthcare reform for decades.
• They crusaded against discrimination in the workplace.
• The organization crusaded for animal welfare laws.