The term "Red Shirts" refers to various groups throughout history that have worn red uniforms or clothing as a symbol of their cause. One notable example is the Red Shirt movement in the United States during the Reconstruction era, where groups of white supremacists used intimidation and violence to suppress African American voters and maintain white dominance in the South. Another significant instance of "Red Shirts" occurred in Italy during the 19th century, when Giuseppe Garibaldi led a volunteer army known as the Garibaldi's Red Shirts. This group played a crucial role in the unification of Italy, fighting for the cause of Italian nationalism and independence from foreign rule.