Democrats have a nasty habit of rehabilitating Republican politicians after they leave office. For example, ask Obama or Biden or any Democrat politicians about the Bushes or Reagan and you'll invariably get positive responses.

Did you miss how GWB was rehabilitated or you weren't around when he was accused of stealing the election and compared with Hitler?

The original image was of Michelle Obama hugging George W. Bush. Those of us who were around back then remember how ghoulish W. Bush's administration was, and he is being rehabilitated by liberals in present era. So this meme is suggesting that a future Republican leader will come around and then liberals will rehabilitate Trump in order to frame that new republican as the ultimate evil.

batman and joker maybe?