I honestly couldn't tell. There's not enough distinguishing features for me to say one way or the other.
Definitely looks like Minneapolis. Looks like Nicollet mall.
I wonder if this was last week. It was "Read an RPG in Public Week" and you're encouraged to read and/or play RPGs in public places, just to get people curious and asking questions. If this is what this is, this takes it to a whole new level of awesome. :)
That's San Francisco, going by the Muni in the background. Pretty sure it's Market Street.
Kiev? Going by that Ukranian Orthodox priest DM'ing the game.
Oh I really hope you're right!