"Last Week Tonight" host John Oliver is taking major exception with the official crowning of Donald Trump as the face of the GOP and the just concluded Republican National Convention.

 Describing the four day event in Cleveland where Trump officially became the party's 2016 presidential nominee, a perplexed Oliver quizzed his audience "What the [expletive] just happened?"

In branding the overall convention as a "mismanaged [expletive]," Oliver reeled off such lowlights as Melania Trump's possibly plagiarized speech to Ted Cruz's on-stage mutiny.

The Republican way

But what seemed to leave the HBO talk show host most aghast is what he described as republicans" preference for feelings over facts."

As one example, Oliver served up a clip of Newt Gingrich making the on-air claim that the fact violent crime has been on a downward spiral for the last 25-years means nothing compared to the fact that some Americans "feel" like it's on the rise.

Overall, Oliver dubbed the convention the "most apocalyptic thing" to ever happen to Cleveland, using a clip of soap opera actor and event speaker Antonio Sabato Jr. assuring the audience, beyond a shadow of the doubt, that President Obama is indeed a Muslim to further illustrate his point.

"What is truly revealing is his implication that believing something to be true is the same as it being true, because if anything, that was the theme of the Republican Convention this week," he added.

Trump Speech Critique

As for Trump's Thursday prime-time address, Oliver took him to task over his claim that "180,000 illegal immigrants with criminal records ordered deported from our country are tonight roaming free to threaten peaceful citizens."

Oliver noted that during Obama's two terms crime rates have actually dipped and the flow of illegal immigrants crossing the border has also declined.

Finally, Oliver hammered home his point by serving up a clip of Trump in action on his old reality competition show "The Apprentice."

 "This is a dictatorship and I'm the dictator," Trump booms. "There's no voting and there's no jury."

Warned Oliver, "Unless we're careful, by this time next year, this could be America's new National Anthem."