Here are the top moments from night two of the second Democratic debate

Biden tried to put Harris on the defensive about the “Medicare for All” plan she unveiled earlier this week.

“The senator’s had several plans so far and anytime someone tells you you’re going to get something good in 10 years you should wonder why it takes 10 years,” Biden said. “There’s no talk about the fact that the plan, in 10 years will cost $3 trillion.”

He added that under the plan, private insurers will be able to remain. “This is the single most important issue facing the public,” Biden said. “You can’t beat President Trump with double talk on this plan.”

Harris responded that Biden’s description of her plan was “simply inaccurate.”

“Under our plan we will ensure that everyone has access to healthcare,” Harris said. “Your plan by contrast leaves out almost 10 million Americans … be reflective and understand that the people of America want access to health care and do not want costs to be their barrier to getting it.”

Biden remained firm on the detriment of the cost of Harris’s plan and the impact it would have on middle class taxes. He also said it would eliminate employer-based insurance.

“The cost of doing nothing is far too expensive,” Harris responded. “We are now paying $3 trillion dollars a year for healthcare in America. Over the next ten years, it’s probably going to be $6 trillion. We must act.”

New York Mayor Bill de Blasio took heat over his refusal to fire the officer involved in the death of Eric Garner, the unarmed black man whose 2014 death has become one of the cases at the heart of the Black Lives Matter movement.

The Justice Department announced earlier this month that it would not bring charges against that officer, Daniel Pantaleo, who allegedly put Garner in a choke-hold.

Hecklers interrupted the debate chanting “fire Pantaleo.”

A number of Democratic candidates weighed in, saying they would have acted differently than de Blasio.

“He should be fired. He should be fired now,” Sen. Kirsten Gillibrand, D-N.Y. said. “If I was the mayor, I’d fire him.”

Housing Secretary Julian Castro said “that police officer should be off the street.”

A tweet sent by the de Blasio campaign during the debate read: “To the folks who were standing up to Mayor de Blasio a few minutes ago — good for you. That’s how change is made.”

Asked about why the city did not fire Pantaleo, de Blasio said the Garner family would get justice within 30 days. Pantaleo could still face internal discipline, though de Blasio did not specify what he was referring to.