President Donald Trump appealed to voter fear on Wednesday when he tweeted a racially charged, pro-GOP ad beginning with this phrase: “Illegal Immigrant, Luis Bracamontes, Killed Our People!” The minute-long video, which has been viewed almost 3 million times, includes several news clips of the migrant caravan that has become an apparent thrust of the president’s closing message the midterms.

See:Fox News anchor Shep Smith debunks Trump’s migrant-caravan rhetoric: ‘There is no invasion. ... But, like I said, a week to the election’

Bracamontes is an undocumented immigrant convicted of murder in February after being deported multiple times. Two members of the Sacramento County, Calif., sheriff’s department were killed in his crime spree. In the ad tweeted by Trump, which reads “Democrats let him in, Democrats let him stay,” Bracamontes is heard saying he wished he’d killed more officers.

“It is outrageous what the Democrats are doing to our Country. Vote Republican now!” Trump tweeted alongside the video.

Here it is:

Trump pinned the controversial ad to the top of his Twitter page despite harsh rebuke from many, on both sides of the aisle, including the former chairman of both Florida’s Republican Party and the American Conservative Union.

“You are a despicable divider; the worse social poison to afflict our country in decades,” Al Cardenas wrote. “This ad, and your full approval of it, will condemn you and your bigoted legacy forever in the annals of America’s history books.”

Also in the those annals, as many pointed out, was the infamous Willie Horton “Weekend Passes” ad from George H.W. Bush in 1988, in which the Republican candidate’s campaign slammed Democratic candidate Michael Dukakis for backing inmate furlough programs as governor of Massachusetts. Horton was a black prisoner who received one of these weekend passes and went on to commit assault, robbery and rape.

Lee Atwater, Bush’s campaign manager and chairman of the Republican National Committee, has been quoted as saying he would reverse a significant polling deficit — Dukakis was up by a percentage in the midteens — if he succeeded in making Horton the running mate of the Democratic nominee. (Atwater later apologized to Dukakis for the “naked cruelty” of the Horton ad, before his death of brain cancer in 1991, at age 40.)

University of California at Berkeley public-policy professor Robert Reich, secretary of labor under Bill Clinton, called the ad tweeted by Trump “the most desperate and vile since Willie Horton” and said the Republicans have “resorted to fearmongering.”

Here’s the Horton ad from 1988: