DWEJ (Detroiters Working for Environmental Justice) is the organization I've been talking about- they are great. Here is a short video put out by them: http://www.youtube.com/watch?v=IvE23ixsbGw
They also have a great website: www.dwej.org, and from there you can find their various programs and information. There's lots to look at, but the most exciting thing I've come across is their community outreach programs (interactive activities in Detroit and information available on the web). Check it out- they've got a lot going on.