The Giraffe Heroes Project has a huge collection of stories about “Giraffe Heroes–people we commend for sticking their necks out for the common good. 
Their stories inspire others to take on the public challenges they see–speaking out against corruption, building bridges across conflicts, taking a stand against injustice, being a voice for the powerless.”
The site notes folks are “working offline on an entirely new website that includes a searchable database of over a thousand Giraffe Heroes’ stories.”