> pertaining to or characteristic of a people, especially a group (ethnic group) sharing a common and distinctive culture, religion, language, or the like.
The inhabitants of a city usually share a common and distinctive culture (and the like.) You're using extremely narrow definitions of genocide as well as ethnicity. Both are vague terms.
Comments
As I said, it depends on how restrictive a definition of ethnicity you use.
http://en.wikipedia.org/wiki/Ethnicity
http://dictionary.reference.com/browse/ethnic
> pertaining to or characteristic of a people, especially a group (ethnic group) sharing a common and distinctive culture, religion, language, or the like.
The inhabitants of a city usually share a common and distinctive culture (and the like.) You're using extremely narrow definitions of genocide as well as ethnicity. Both are vague terms.
You appear to be choosing definitions that don't match those in dictionaries, but I'm sure they're perfectly cromulent.