Former CIA Director John Brennan John Owen BrennanJournalism or partisanship? The media's mistakes of 2016 continue in 2020 Comey on Clinton tweet: 'I regret only being involved in the 2016 election' Ex-CIA Director Brennan questioned for 8 hours in Durham review of Russia probe MORE blasted President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE on Saturday for the president's tweet attacking NBA star LeBron James and CNN host Don Lemon.

Brennan, a frequent Trump critic, tweeted that Trump is having a “harmful impact” on youth in America with “lies, insults, and polarizing hate speech.”

“What responsible & right-thinking adult can point to [President Trump] as a role model for our youth?” he wrote. “Whenever he spews lies, insults, and polarizing hate speech against fellow Americans, think of its harmful impact on our young people and the way they talk, act, & treat others.”

What responsible & right-thinking adult can point to @realDonaldTrump as a role model for our youth? Whenever he spews lies, insults, and polarizing hate speech against fellow Americans, think of its harmful impact on our young people and the way they talk, act, & treat others. https://t.co/S8sPpydvt9 — John O. Brennan (@JohnBrennan) August 4, 2018

In a tweet late Friday night, the president attacked James’s intelligence and called Lemon the “dumbest man on television” following an interview where James said that Trump was using sports to “divide us.”

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The tweet drew sharp criticism from many who saw it as the latest example of the president targeting black athletes, following previous feuds with NFL and NBA players.

Longtime CBS News anchor Dan Rather tore into Trump for the tweet, calling it “racist” and “the product of petty but dangerous hatreds.”