George W. Bush hinted Thursday at his dissatisfaction with Donald Trump, complaining in a New York City speech that ‘bullying and prejudice’ has become a caustic norm in American public life.

At an event hosted by the George W. Bush Institute, the 43rd U.S. president rattled off a thinly veiled litany of complaints about the current commander-in-chief, focusing on both his tone and his isolationist policy choices.

‘Our young people need positive role models,’ he said. ‘Bullying and prejudice in our public life sets a national tone, provides permission for cruelty and bigotry, and compromises the moral education of children.’

Trump’s tenure has been marked by a seemingly endless stream of outraged posts on his Twitter account and a dramatic political polarization among U.S. voters.