. >> my name is joe, good morning, i'm the mayor of somerville, massachusetts, and i think we have a great model he in somerville, but an overall view, local governments have the responsibility to use rules such as zoning to set out uses and expectations and what is going to come into a feigned. we do so to protect the overall quality of life and health of our constituents, so whether it's managing density, traffic, or the types of uses, that is our responsibility at the end of the day, to again, manage the consequences or the uses, both positive and negative that come into our neighborhoods, so we have a role and a history of doing that and actually it is our responsibility. >> yes. adewale troutman. one of the things that's been shown across the country is a proliferation of certain types of restaurants in certain neighborhoods. if you look at areas where the socioeconomic status is low or predominantly african-american or latino and you compare it to other communities that are more affluent or different racial and ethnic mix, you find an overwhelming propeity of location of fast-f