You're right. For all your insistence of dictionaries, you haven't actually defined race, dictionary definition or not.
So let's get on the same page. This one:
http://dictionary.reference.com/search?q=race
Some highlights:
"2. A group of people united or classified together on the basis of common history, nationality, or geographic distribution: the German race."
"The biological aspect of race is described today not in observable physical features but rather in such genetic characteristics as blood groups and metabolic processes, and the groupings indicated by these factors seldom coincide very neatly with those put forward by earlier physical anthropologists."
CONCLUSIONS: You basically have no leg to stand on saying Cockney, Muslim, and Jew aren't races except a traditional definition long ago superseded.
Other mainstream thinking until radical politics got mixed in it includes (1) the white race is superior other races, (2) other races are subhuman animals, especially Jews (cf. the Aryan movement). I suppose you'll want to defend those traditional definitions now, too?