CLEVELAND (AP) — Marked by angry interruptions and bitter accusations, the first debate between President Donald Trump and Democratic challenger Joe Biden erupted in contentious exchanges Tuesday night over the coronavirus pandemic, city violence, job losses and how the Supreme Court will shape the future of the nation’s health care.

In what was the most chaotic presidential debate in recent years, somehow fitting for what has been an extraordinarily ugly campaign, the two men frequently talked over each other with Trump interrupting, nearly shouting, so often that Biden eventually snapped at him, “Will you shut up, man?”

“The fact is that everything he’s said so far is simply a lie,” Biden said. “I’m not here to call out his lies. Everybody knows he’s a liar.”

Trump and Biden arrived in Cleveland hoping the debate would energize their bases of support, even as they competed for the slim slice of undecided voters who could decide the election. It has been generations since two men asked to lead a nation facing such tumult, with Americans both fearful and impatient about the coronavirus pandemic that has killed more than 200,000 of their fellow citizens and cost millions of jobs.

Over and over, Trump tried to control the conversation, interrupting Biden and repeatedly talking over the moderator, Chris Wallace of Fox News. The president tried to deflect tough lines of questioning — whether on his taxes or the pandemic — to deliver broadsides against Biden.

The president drew a lecture from Wallace, who pleaded with both men to stop interrupting. Biden tried to push back against Trump, sometimes looking right at the camera to directly address viewers rather than the president and snapping, “It’s hard to get a word in with this clown.”

The vitriol exploded into the open when Biden attacked Trump’s handling