Altnernative Press has included Green Day in a list of 12 artists who are a positive influence. About Green Day they write,

[quote]The punk attitude of Green Day has been inspiring our scene for decades. From Warning to American Idiot, the group have always been known for their rebelliousness and not holding back on talking about social issues. The band’s charity work is actually quite impressive, as the list includes Artists For Peace And Justice, Children With Leukemia, 21st Century Leaders, Habitat For Humanity, Music For Relief, Red Cross, MusiCares, Music In Schools Today and many more.[/quote]

Check out the full list over at AltPress.com (I'll be honest and say I know knew 2 of the other bands =/ )

Source: http://www.altpress.com/features/entry/12_artists_that_are_a_positive_influence

Thanks to marcia for sending this news in.