do you really want to volunteer where you're valued ?
go to a really poor country, not one with vast natural resourses exploited by a thin layer of the political circles of the corrupt society, like angola. these are not poor countries, these are extremely rich ones who must first sort out their equal opportunities and it's not the white man who'll do it, only themselves.
the reason for europeans to volunteer, and i had quite a few serious talks with serious volunteers there, is to clear their conscience from years of maltreatment of their colonies' natives which is of course irrelevant to us israelis.