A pro-Hillary Clinton super PAC escalated her campaign's recent attacks on Donald Trump Friday by releasing an ad invoking the 1968 assassination of Martin Luther King Jr.

The commercial, titled "Trump: Make America Hate Again," features audio and footage of the GOP nominee encouraging his supporters to confront rally protesters.

"I'd like to punch him in the face, let me tell you," Trump can be heard saying in the ad, which was produced and released by American Bridge 21st Century. "Knock the crap out of them. In the old days, they didn't come back."

The commercial also brings up the fact that several white nationalists, including former Ku Klux Klan member David Duke, have endorsed Trump's candidacy.

Toward the spot's conclusion, Joseph Louw's infamous photo of the aftermath of the Martin Luther King Jr. assassination is displayed prominently in the forefront of the ad.

"Louw, a young South African photographer and filmmaker at work on a documentary about King, had been eating dinner in a Memphis restaurant during the hour before tragedy struck," Time magazine noted.

"Louw captured the chaos and emotion that hovered over that April evening. He shot four rolls of film, but one image in particular remains emblazoned on the memories of those alive to see it at the time," Time added.

"In the moments following the shot, as King lay unconscious on the balcony, his comrades turned their attention to a sight in the distance: the assassin, getting away. They pointed their fingers in concert in the direction of his flight."

Clinton and her running mate, Sen. Tim Kaine, D-Va., have both delivered public addresses in which they've alleged that Trump's campaign is actively pushing the sort of bigotry and prejudice that defines groups like the KKK.