You may recall that back when Obama first campaigned for President, Time Magazine, or maybe it was The New Yorker, ran a cover with a cartoon of Obama and Michelle dressed in desert robes, holding AK's and giving each other a fist-bump. It was meant as satire of the rightwingnut media pundits. The fist-bump happened between the Obamas after a campaign speech, and the usual clueless old white conservative fuckwits freaked out, calling that common gesture a "thug" or "terrorist" hand signal.
I believe this cartoon above is just an example of Daryl Cagle, a respected cartoonist who for decades has been consistently even handed in critiquing pols from both parties, poking fun at rightwingnut hype.