Unlike typical political ads, nowhere in this video does the president declare who paid for it. Campaign finance experts said that by limiting it to his social media feed, Trump has found a gap in campaign finance laws that are meant to let voters know who sponsors the messages they see.
The ad then turns to footage of the caravan of Central American migrants making their way towards the U.S. border.
The caption reads: "Illegal immigrant, Luis Bracamontes, killed our people!"
The ad was reminiscent of the infamous "Willie Horton" ad used against Democratic presidential candidate Michael Dukakis in 1988 and condemned as racist.
Some Republican operatives worry that President Donald Trump's recent immigration crusade, while red meat to his base, is alienating suburban women and other swing voters absolutely crucial to the GOP retaining control of the House.
With only a few days left until the midterm election, Donald Trump has stepped up his anti-immigration, fear-mongering, polarizing tactics with a blatantly racist new ad that even has some conservatives finally saying he's gone too far.
Then a segment from Fox News shows a correspondent interviewing a man identified only as "deported immigrant in caravan", who through a translator, requests to be pardoned for attempted murder.
Nintendo second-quarter profit hits eight-year high, powered by Switch sales
Operating profit in the July-September quarter was 30.9 billion yen (about $275 million ), up from 23.8 billion yen a year ago. The firm said it hopes to grow sales of the Switch further by "continuing to introduce compelling new software".
"There is some ambiguity about when a disclaimer is required for ads posted exclusively on social media, and the Trump campaign may be trying to assert a loophole", Brendan Fischer, who is in charge of the government reforms program at nonprofit Campaign Legal Center, told ABC News.
The 53-second video released Wednesday evening remains pinned to the top of the president's popular Twitter feed.
"This was a classic example of racial cuing", Claire Jean Kim, a political-science professor at the University of California at Irvine, said in a 2012 PBS special.
"Willie Horton was devastating to Mr. Dukakis", the New York Times wrote in 1990, citing the smear campaign as a success for Bush Sr. "I hope this doesn't work".
"This is distracting, divisive Donald at his worst", Perez said on CNN.
CNN political analyst John Avlon reminded her that former RNC chair and George H.W. Bush adviser Lee Atwater had apologized for the race-baiting Willie Horton ad shortly before his death in '91. The ad was widely criticised for emphasising that Horton was black.
But something tells us, Trump isn't anxious about that.