Executive director of Voces de la Frontera, in Milwaukee, Wisconsin. On May 1, 2006, she was key organizer behind the 70,000-strong march in Milwaukee. At the time the march was described as the largest in Wisconsin’s history. That number grew to 80,000 people the following year. This Sunday, National AFL-CIO President Richard Trumka will speak at Milwaukee’s May Day march for immigrant and worker rights on Sunday.