Depicting black people as monkeys is pretty much the textbook version of racism.
That said:
--Obama, in particular, as a former U.S. President and a top recent political figure, ought to be subject to most forms of mockery, even offensive ones (free speech interests are high).
--The AI has botched this job so badly that these images aren't evidence of much of anything but horror.
Don't get me wrong, it's still racist, just not racist enough to be a site terms violation. Possibly. But maybe.
Final call: Borderline
I'm just edgy like that