“Real Time” host Bill Maher slammed the schools on Friday night as panelists discussed why many young Americans believe America is the worst in the world.

Maher pointed to problems with schools as the reason young Americans are disillusioned with America, despite living “like kings.”

“One of the issues with patriotism, and I was just about to talk to the Democrats about this, and it relates to what we were talking about on the show, education, is that if you watch interviews with young people, very often they think America is the worst country in the world. And they think it's the worst time to live in America. This is just total ignorance,” Maher told his guests.

“They have no common sense. Schools don't teach kids the basics. They don't know that this is the best time to be alive. The average person living today lives like a king. 100 years ago a hot shower was a huge luxury. The amount of entertainment we have. The amount of calories we consume. The speed of travel. Communication. Porn on the phone!” Maher said, to applause from the audience.

John Avlon, a former CNN personality and current Democratic candidate for Congress in New York, also said schools should start teaching students American history. (RELATED: “USA, USA!”: Patriotic college students fire back at pro-Palestinian protesters

“We have to acknowledge that the far left has advanced this ahistorical argument that our country was founded to preserve slavery, not on principles that made that criminal enterprise unsustainable,” said H.R. McMaster, a former national security adviser.

Maher's guest was incensed when McMaster criticized Democrats, saying McMaster should not replace the truth with a “conventional, convenient version of history.”

Avlon stressed the importance of educating students by teaching them from the perspective that Americans are “an imperfect people trying to create a more perfect union.”

“If we teach young people that their country is not worth defending, then who will?” McMaster warned.

“The attacks on the Founding Fathers were incomplete, of course. What they were doing, by the way, wasn't all that different from anyone else in the world, including people of color in other parts of the world who owned slaves,” Maher said. “We didn't invent it.”

“Slavery has been prevalent among humans throughout human history,” said Rich Lowry, editor in chief of National Review. “What's new is that we're starting to speak out against it.”