Last Sunday, President Barack Obama was the commencement speaker at Rutgers University’s 250th Commencement. During his speech, he offered the graduates encouraging words of wisdom as they moved to the future, and he also talked about politics, of course.

During his speech, President Obama offered the Rutgers graduates valuable lessons like “If you were listening to today’s political debate, you might wonder where this strain of anti-intellectualism came from,” Obama said to Rutgers’ 250th graduating class. “In politics and in life, ignorance is not a virtue.”

That statement was heard nationwide and seemed to indirectly call out Republican candidate Donald Trump, who was not too pleased to hear that.

Naturally, Trump fired back on Twitter.

During his speech last Sunday, Obama continued to throw jabs at Trump without ever using his name by stating how “anti-intellectualism” has leaked into American politics, which comes after the unanimous Republican candidate has continued to create controversy due to his comments about illegal immigration, Muslims, women, and mocking his opponents.

The president also discussed how some of Trump’s policies like his proposal to build a wall across the U.S – Mexico border and temporarily banning Muslims from America contradict America’s history as a melting pot.

“That’s how we became America,” Obama said. “Why would we want to stop it now?”

You have to watch the video above. It’s great!

(Photo by Eduardo Munoz Alvarez/Getty Images)