Trump claims Harris runs 'a campaign of absolute hate' following backlash to Madison Square Garden rally

The former president addressed a room of supporters at his Mar-a-Lago estate on Tuesday, hours before Harris was set to deliver what her campaign has described as her closing speech on the Ellipse outside the White House, where she is expected to urge the country to turn the page on Trump. 

"After two assassination attempts in just over three months, her lies and her slanders are very shameful and really inexcusable," Trump described, referring to the attempts on his life.

MSNBC put a spotlight on the venue being where a pro-Nazi rally occurred in 1939, even though MSG has been rebuilt several times and the current addition wasn't even completed until 1969. The network declared Trump's event was "particularly chilling" because it was held in the same arena that once hosted supporters of "a different fascist leader, Adolf Hitler."

Retired NYPD Inspector Paul Mauro called it "ridiculous" to equate Trump's rally with what went on at MSG in 1939.

"Does the fact that you played the arena somehow make you Nazi adjacent? And let me tell you, for a Nazi rally there were an awful lot of Israeli flags in that building," Mauro said Monday on "America's Newsroom."

Stop Antisemitism founder and executive director Liora Rez also blasted the Hitler comparisons.

"Equating either presidential nominee-or their supporters-to the Nazi regime is a dangerous trivialization of the real horrors committed by Hitler. It dishonors the millions who were murdered and the brave who fought to end his tyranny," Rez told Fox News Digital. 

"Fascist was an answer to a question that was asked at a town hall and it was a direct question and the vice president gave a very direct answer," Richmond added. "And it's consistent with the people who worked around him."

Critics have heavily criticized the Harris campaign's lack of focus and say the "joy" isn't resonating with voters.

Former White House press secretary Ari Fleischer, whose relatives perished during the Holocaust, said Democrats making Nazi comparisons their closing argument in the election is the "dumbest" thing they could do politically. 

Fox News Digital's Greg Norman, Brian Flood, and Hanna Panreck contributed to this report.