Are there any campaigns or groups working on reducing the standard copyright term length? I believe this is a very worthwhile pursuit, but very complicated to u

Are there any campaigns or groups working on reducing the standard copyright term length? I believe this is a very worthwhile pursuit, but very complicated to undertake. The WIPO Copyright Treaty and the Berne Convention are international agreements, and individual countries also have their own laws. Thus I'm not even sure how one would go about starting to lobby for a reduced copyright term.