I don't know what the victim's race is but if he is White then it makes perfect sense. That area has had a huge upswing in multiple blacks attacking lone Whites.
Not only there but across the country over the last 5 years.
There will be (I hope) more clarity after the initial court hearings scheduled for the 22nd and 23rd. Right now there are so many glaring gaps in reporting that judgment should be suspended all around.
However, I will note that this neighborhood in Denver has had more than its share of outrageous assaults and homicides, likely attributable to a bar catering to the unruly. This is perplexing in its own right, as it has been redeveloped, and has kind of a wide open layout of mixed use businesses, according to Google street view.
(Update: the puncher has been charged with 2nd degree assault; the two women with 3rd degree assault on an incapable person, which is a class 5 or 6 felony.)
There were violent assault incidents there last July, April, and a racial incident in 2010 where the victim later said “he felt pressured by the police to fabricate an injury so that his 10 attackers could be charged with felonies.”