i just had a look at the location where this occurred and think maybe i have something to add.
here's the streetview. the thing to note here is the absence of people who aren't white. people who have never lived up north don't have an appreciation for northern racism. it's pernicious and therefore subtle.
i haven't read the detail and also realize the whole episode can turn on learning additional insight that is probably not available at this point. what i do know is my experiences living up north taught me how to read the racism there. looking at the streetview scene and using goog's wayback machine to look back in time, i couldn't see a non-white face until i got back to 2011. back then the site was a cleaners, not a bad-coffee joint. we, down here, don't realize how segregated the northern cities are. it isn't official and isn't recognized up there. it just is.
simply those folks being in an all-white area is an offense, and i'm sure the offenders here knew it. it was a minor-league version of the lady who refused to go to the back of the bus.
edit: adden-dumb.
i looked again at the streetview i just posted and realize i made a mistake. there is one woman on the street who may be non-white but the google smear makes it not clear whether or not. if african, she is light-skinned.
but well down one of the streets i just found a man who is clearly african. that doesn't change my opinion one bit, but i erred in not noticing that. what isn't wrong is my understanding of the north. i used to see a cop having pulled over a car in a all-white neighborhood and would make a guess regarding the age of the black person driving. when i say, all-white, by the way, i mean all white except the one or two black families who live there who are ordained to be the pets of the neighborhood. like sammy davis, they are there to show how not-racist the neighborhood is. any non-pets are one their own.