GOP presidential nominee Donald Trump named Breitbart News Executive Chairman Stephen K. Bannon CEO of his campaign on Wednesday, and social media immediately went wild.

Bannon will temporarily step down from his role with the ultra-conservative news site to work full time on Trump’s campaign. His position is designed to bolster the “business-like approach” of the organization, according to a press release. The polarizing Bannon is a former Goldman Sachs investment banker known for his conservative views.

He is also a former Naval officer, was special assistant to the Chief of Naval Operations in the Pentagon and holds an MBA from Harvard. To top it off, he is a stakeholder in “Seinfeld.” Yes, the television show. Despite the impressive resume, not everyone is thrilled with Trump’s decision.

Also Read: Donald Trump Names Breitbart Exec Campaign CEO in Massive Staff Shake-Up

Politico’s Ben White wrote, “It says here on Twitter that Trump hired the loony head of @BreitbartNews to run his campaign. But that obviously can’t be true.” Former Obama speech writer Jon Favreau chimed in with, “Anyone saying this is a ‘good’ thing for Trump that will win him more voters should quit punditry forever.”

A Trump parody account wrote, “I hired the head of Breitbart to run my campaign after the head of the Onion turned me down for not being a serious enough candidate.”

Check out some of the harshest tweets.

Breitbart's been described as a comment section turned into a website. Trump's been described as a comment section running for president. — Daniel Dale (@ddale8) August 17, 2016

It says here on Twitter that Trump hired the loony head of @BreitbartNews to run his campaign. But that obviously can't be true. — Ben White (@morningmoneyben) August 17, 2016

Yes, anyone saying this is a "good" thing for Trump that will win him more voters should quit punditry forever https://t.co/cEmL0FZm0X — Jon Favreau (@jonfavs) August 17, 2016

here's some of Breitbart's great work this year pic.twitter.com/DnDtHJ7XPb — Jesse Lehrich (@JesseLehrich) August 17, 2016

I've done it too but calling Breitbart "conservative" seems … not quite accurate. — Ryan Lizza (@RyanLizza) August 17, 2016

I hired the head of Breitbart to run my campaign after the head of the Onion turned me down for not being a serious enough candidate. — President Trump (@Writeintrump) August 17, 2016

Does anyone have a good story/list of the all-time most disgusting/deranged things Breitbart has published in the last few years? — Jon Favreau (@jonfavs) August 17, 2016

Breitbart is officially Pravda. And my friend Andrew weeps. — S.E. Cupp (@secupp) August 17, 2016

Super excited for another day where the candidate with the CEOs of Fox News and Breitbart on his payroll continues whining about media bias — Matt Walsh (@MattWalshBlog) August 17, 2016

The RNC shouldn't give a dime or help in anyway a campaign run by Breitbart. It's like funding CDC run by a Witch Doctor. — stuart stevens (@stuartpstevens) August 17, 2016

Flashback: Breitbart Editor Ordered Staffers To Stop Defending Michelle Fields https://t.co/pwosHweko7 — McKay Coppins (@mckaycoppins) August 17, 2016

I hope to never face a crisis in my life so dire that Breitbart is the answer — Bobby Big Wheel (@BobbyBigWheel) August 17, 2016

I ask again: where was Trump radicalized? How do you go from Clinton donor to Breitbart in 8 years because of a black president? — Brett Sandusky (@bsandusky) August 17, 2016

I enjoy politics, I think I have an understanding of it on both sides. I have no idea what Trump is doing w this Breitbart thing. — SienaSoup (@sienasoup) August 17, 2016

Rush Limbaugh is now calling Breitbart "Trumpbart" — Venom Grandad (@PunishedSnek) August 17, 2016

Another inane move by this campaign. SMH I'm telling you a toddler could make better decisions. Trump IS going to lose. #Breitbart — Lilah G. Asher (@LilahAsher) August 17, 2016

Breitbart helped create the atmosphere for this crude, arrogant Orange Rat to pollute our public airwaves.#WednesdayWisdom — Jon Hartmann (@jonhartmannjazz) August 17, 2016

Listen up America- @realDonaldTrump DOES NOT WANT to be President. Hiring nutter from #Breitbart to run his campaign is a cry for help. — Paul S (@StrongAmerican) August 17, 2016