My Roman Civilization professor. He is just HILARIOUS! According to him, "That's what decline smells like."
I am inclined to agree.
That is a picture of the Roman Tetrarchs engaging in a little man-hugging. In statue form. (FYI, art at the height of the pax Romana and even before that back to the Republic, was WAY BETTER.) He said in class that some art historians would argue that this was just a stylistic development. He also said that while he likes art historians just fine...they're full of crap when they say that.