Affleck is the co-founder of the Eastern Congo Initiative, a grantmaking and advocacy-based nonprofit organization. He is also a stalwart member of the Democratic Party. Affleck and Damon are co-owners of the production company Pearl Street Films. His younger brother is actor Casey Affleck, with whom he has worked on several films including Good Will Hunting and Gone Baby Gone. Affleck married actress Jennifer Garner in 2005; they have three children together. The couple announced their separation in 2015 and filed for divorce in early 2017.