"Green Shirts" refers to members of the Italian Fascist paramilitary group known as the Blackshirts, who wore green uniforms. This group was active during the early 20th century and supported the regime of Benito Mussolini. The name "Green Shirts" is often used to describe various nationalist or fascist movements that adopted similar uniforms. The term can also refer to other groups or movements that have used green as a symbolic color. In some contexts, "Green Shirts" may represent environmental activism or political movements focused on sustainability. The specific meaning can vary based on historical and cultural contexts.