Rosas is the surname of two prominent civil rights activists, Dolores Huerta and Cesar Chavez. Bonheur and Parks are two other civil rights activists, both of whom were instrumental in the fight for racial equality in the United States. Bonheur was a French-born American activist who fought for the rights of African Americans in the early 20th century. Parks was an African American civil rights leader who famously refused to give up her seat on a bus in 1955, sparking the Montgomery Bus Boycott. Together, these four activists have been credited with helping to bring about significant changes in civil rights legislation in the United States.