Donald Trump Jr., son of President Donald Trump, frequently uses his prominence on Twitter and proximity to the White House to promote right-wing media trolls who defend his father and smear mainstream media.

Key voices in the incestuous right-wing alternative media ecosystem have found an ally in the younger Trump, who often retweets and favorites tweets from the echo chamber’s loudest voices, and who is rumored to serve as a White House source to at least one far-right personality. Like the far-right trolls he expresses admiration for, Trump spends his time on Twitter spreading debunked conspiracy theories, smearing mainstream media outlets, promoting bogus “alt-right” videos, and amplifying messages with white nationalist undertones. Trump’s behavior, in effect, validates the larger alternative media ecosystem and attempts to bring the fringe worldview into the mainstream.

Mike Cernovich

Trump has repeatedly indicated an affinity for right-wing troll and Infowars contributor Mike Cernovich. Cernovich gained notoriety during the 2016 election for promoting fake conspiracy theories such as the “Pizzagate” narrative, accusing Democratic officials of operating a child sex trafficking ring in the basement of a Washington, D.C., pizzeria. Infowars’ Alex Jones told his audience that the president’s “sons, especially Donald Jr.,” are Cernovich’s sources on White House affairs. And earlier this year, Trump claimed that “in a long gone time of unbiased journalism” Cernovich would “win the Pulitzer” prize for his faux scandal story that alleged Susan Rice, who served as national security adviser to then-President Barack Obama, was responsible for improper unmasking of Trump associates caught in surveillance of foreign officials.

Stefan Molyneux

The younger Trump also frequently retweets Stefan Molyneaux, a prominent far-right blogger who promotes right-wing trolls and conspiracy theories about “globalism.” Trump closely follows Molyneaux, boosting many of his tweets and favoriting one that featured a depiction of CNN reporter Andrew Kaczynski in a Nazi uniform.

Infowars’ Alex Jones and Paul Joseph Watson

Infowars’ top conspiracy peddlers, Paul Joseph Watson and Alex Jones, also have Trump’s attention. During the 2016 election, Trump shared an Infowars article that falsely accused Democratic presidential nominee Hillary Clinton of wearing an earpiece during the first presidential debate. Trump has also liked tweets from Watson and recently attacked CNN while Infowars was pushing a “meme war” against the network.

4chan

While he was sharing anti-CNN memes, Trump also favorited a tweet from a Twitter account connected to the internet cesspool known as 4chan’s “politically incorrect” message board (/pol/). The tweet contained a list of companies that advertise on CNN and encouraged people to tweet at the companies and ask them to stop advertising on the network. Alongside far-right ideologies, the board often features anti-Semitic, racist, sexist, homophobic, and white nationalist content.

Jack Posobiec

Trump also promotes right-wing troll Jack Posobiec on Twitter. Posobiec’s publicity stunts and bogus talking points have duped mainstream media sources and public officials. On July 8, Trump shared a video Posobiec posted that depicted protesters setting fires in Germany in response to the G-20 summit. Posobiec is a media troll who got “temporary White House credentials” to attend the press briefings. He is responsible for peddling hacked emails that were likely sourced from Russia, spreading the “Pizzagate” conspiracy, and orchestrating smear campaigns against people who opposed the senior Trump.

Trump’s affinity for these far-right media personalities and his active promotion of their half-baked theories about the day’s news validates the alternative media ecosystem to its audience and furthers the far-right’s attempt to delegitimize longstanding journalistic institutions. By emulating and affirming these fringe figures, Trump furthers his father’s disdain for the press and stokes public distrust of legitimate news outlets.