Apparently we celebrated the Fourth of July and Christmas on the same day back in the '70's? I can't tell what time of year it is from this photo.
There's not much you can draw in conclusion from this one photo. Yes, it's very busy and yes, every single person looks to be Caucasian. Compare this to today (well, not today, but maybe another day?).
Considering that Filene's is closed, that other shops are boarded up, that the downtown retail market has been further displaced into the suburbs, is it any wonder we consider DTX to be "underutilized"?
I'm not sure any of the types of people in that photo will be coming back to DTX. In the future, it will be business workers, kids from Roxbury and Dorchester, and college kids. And condo/apartment owners scuttling back into their homes at One Franklin.