- Glover served as a Goodwill Ambassador for the United NationsDevelopment Program from 1998-2004.
- At one time, Glover sat on the advisory board of the Vanguard Public Foundation.
- Glover currently serves as board chairman of the TransAfrica Forum, which describes itself as “an educational and organizing center that encourages progressive viewpoints in the United States foreign policy arena and advocates justice for the people of Africa and the African Diaspora.”
- Glover describes himself as someone who has “been an advocate for peace [his] whole life.” But in April 2006, while in London to promote an anti-death-penalty play titled The Exonerated, he assaulted a paparazzo.
- In 2007 Glover was a guest speaker at an event of the Los Angeles Alliance for a New Economy, which promotes the ensctment of living-wage laws and the replacement of traditional jobs with “green jobs.”
- In January 2013, as Treasury Secretary Timothy Geithner was preparing to step down from his post, Glover teamed up with MoveOn.org to exhort President Barack Obama to name Paul Krugman to as Geithner’s replacement.
- On January 7 2015, Glover spoke at a Washington, DC event titled “John Conyers’ 50 Years of Service,” sponsored mainly by the Institute for Policy Studies. Other guests, speakers, and organizers associated with that event included Julian Bond, John Cavanagh, Robert Creamer, Alan Grayson, Charles Rangel, Marcus Raskin, Jan Schakowsky, union leader Irvin Jim (a self-proclaimed Marxist-Leninist), and a number of members of the Congressional Black Caucus and Congressional Progressive Caucus. Robert Borosage, for his part, sent a tribute to Conyers.
- Glover is a strong backer of the socialist magazine Monthly Review, which he says “challenges us to think, inspires us to action, and makes us realize that the impossible is only difficult, not insurmountable.”
- In May 2015, Glover spoke at a conference observing the 50th anniversary of the Vietnam War’s commencement. Honoring the purportedly valuable contributions of the radical antiwar movement, the event also featured such speakers as John Conyers, Ron Dellums, Phil Donahue, Daniel Ellsberg, Dolores Huerta, Barbara Lee, and Patricia Schroeder.
- Over the years, Glover has made political campaign contributionsto a number of political candidates, all of them Democrats. Among these recipients were Ron Dellums, Harvey Gantt, Barbara Lee, Cynthia McKinney, and Howard Metzenbaum.