"Organizers estimated the D.C. march alone was attended by 800,000 people, making it the largest single-day protest in the history of the nation's capital," he said. "At least until [special counsel] Robert Mueller gets fired."
He added, "See everybody in two weeks."
"Of course, these young people were so amazingly inspiring, we are so grateful for the courage they've got to create an event like this and fight for all of our safety and not just their own," Colbert said.
But then the comedian pointed out, "not everybody was inspired by these young people."
Most notably, was "former senator and robot in the hall of 'never going to be presidents' Rick Santorum," Colbert cracked.
The morning after the march, Santorum was quick to downplay the hype from the march and instead suggested that students should learn CPR rather than look for "someone else to solve their problem."
"They took action to ask someone to pass a law. They didn't take action to say, 'How do I, as an individual, deal with this problem? How am I going to do something about stopping bullying within my own community? What am I going to do to actually help respond to a shooter?" Santorum argued.
Colbert quickly chimed in, "Yeah, kids, stop asking the government to address your needs. Remember what the bill from 'Schoolhouse Rock' says? 'You're on your own suckers.'"
"Great idea, Rick, but why stop at CPR?" Colbert added. "Kids should learn blacksmithing so in case of an emergency they can forge their own rifle!"
Watch the full Colbert video below: