PHILADELPHIA - Attendees arriving at the Democratic National Convention were greeted by signs throughout the city warning them: “Don’t believe the liberal media.”

Brent Bozell, the president of the Media Research Center, said that the group's highly visible ad campaign is an effort to draw attention to what he characterized as "liberal bias" in the mainstream media’s coverage of the 2016 presidential race.

The media’s "love affair” with presumptive Democratic presidential nominee Hillary Clinton “will reach its apex this week in Philadelphia," he added in a statement.

Saw my first @newsbusters billboard already. Down by Chester. pic.twitter.com/t4517Zmfat

— Stephen Gutowski (@StephenGutowski) July 24, 2016

Spotted a @theMRC sign on the way to #DNCinPHL pic.twitter.com/DbwfWxAyyp

— Kate Scanlon (@kgscanlon) July 25, 2016

“They have been in the tank for her since the beginning. We can safely predict that at the Democratic National Convention they will need smelling salts to recover from their fainting spells,” Bozell said. “The Media Research Center is not going to allow the media to coronate Hillary without a fight. We intend to show all of America their role in propping up, promoting, and defending the most corrupt person to ever receive a major party’s nomination. From Benghazi to illegal Clinton Foundation donations to criminally-dangerous misuse of classified information, the media have held Hillary’s hand every step of the way and they ought to be ashamed. It's time they started to report the truth.

"It's very simple: Cover Clinton like you're covering Trump. Nothing more, nothing less,” he added. “The fourth estate is failing in its responsibility to the American people. As most in the media transition to their role as Clinton’s communications arm, the Media Research Center is going to expose their agenda. If they thought their credibility was in the tank before this began, wait to see what it looks like when this one is over."

The Media Research Center also displayed similar signs during the Republican National Convention in Cleveland.

.@theMRC's "Don't Believe the Liberal Media" sign is still lurking over @chucktodd's shoulder #TTT16 #RNCinCLE pic.twitter.com/rm4vR6F04a

— Curtis Houck (@CurtisHouck) July 18, 2016

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