“ ‘The world is messy. There are ambiguities. This idea of purity and you’re never compromised and you’re politically woke, and all that stuff — you should get over that quickly.’ ”

That’s the message former President Barack Obama delivered to a the crowd at the Obama Foundation Summit in Chicago on Tuesday, where No. 44 was joined by his wife Michelle, filmmaker Ava DuVernay and actor Billy Porter.

Obama also took a shot at how Twitter TWTR, +0.69% , one of the current president’s chosen means of communication, is worsening the dialogue and not providing much-needed change.