He was mocking the left. And they didn't even understand that he was mocking them. Hilarious.
At the DUmp, they're so DUmb that any use of sarcasm requires them to use that stupid "sarcasm" sign thing. Otherwise, no matter now obvious, sarcasm goes over their heads, and the DUmmies go berserk over the literal meaning. Their sense of humor is as non-existent as their intelligence.