Bernie Sanders propped up Donald Trump today as a symbol of 'greed and recklessness' as he held a really next door to a failed hotel and casino the billionaire used to own and operate.

Sanders ripped into Trump, the presumptive Republican nominee, and investor Carl Icahn, who purchased the Taj Mahal property from his friend as it came out of bankruptcy, for taking away workers' rights and 'squeezing' the middle class as they made off with millions.

'We are going to tell the Carl Icahns of the world that that greed is not acceptable,' Sanders said from Boardwalk Hall, a venue that is next door to the now-shuttered Trump Plaza, which closed down in 2014.

The Democrat told his supporters, 'That greed is destroying America and you are looking at somebody if elected president will take these people on.'

Letters are removed from the Trump Plaza Casino signage in Atlantic City, New Jersey on October 24, 2014. Trump no longer controlled the property at the time, after divesting most of his ownership in a bankrupsy proceeding years before

CLOSED FOR BUSINESS: Trump Plaza is a property of Trump Entertainment Resorts. It closed on September 16, 2014, after 30 years in operation, putting more than 1,000 people out of work

BEFORE AND AFTER: A month before the hotel closed Trump filed a lawsuit to have his name removed from the outside of the building because he was no longer involved with the Trump entertainment brand

The Democrat told his supporters today as he talked about Trump and investor Carl Icahn, 'That greed is destroying America and you are looking at somebody if elected president will take these people on'

BOARDED UP: Trump's name is covered up by painted black boards on one side of what was formerly known as Trump Plaza

NEXT DOOR NEIGHBORS: Sanders held his rally today at Boardwalk Hall, the tan building on the left, to draw attention to Trump's business failures. Trump Plaza is seen here on the right

Trump was only a partial owner of Trump Plaza when it closed down in 2014. He sued the corporation in control for allowing it to fall in disrepair.

Sanders held his feet to the fire today, however, and Icahn's, during a morning rally aimed at firing up his supporters ahead of New Jersey's June 7 primary.

'You know Donald Trump?' he said after his audience booed the Republican's name when he commented on his 'greed and recklessness'.

He rhetorically asked them, 'You don't think he's a brilliant and successful business man?'

Workers in Atlantic City are fighting for healthcare, Sanders said.

'What workers hers are fighting for is to maintain the pensions than they were promised. I stand with those workers,' he said.

Sanders said as president he would tell the Icahns, Trumps and billionaire class, 'You guys are not going to get it all.'

Lambasting them at another point, the Democratic presidential candidate said of the duo, 'Their greed is causing people terrible suffering.'

Sanders said he'd put an end to that sort of 'corporate greed' that also leads to jobs being shipped overseas.

'There is no end. There is no end. They are shutting down plants in America that are making a good profit simply because they can make a better profit exploiting people in China or Mexico,' he said.

No more in a Sanders administration.

'They are going to have to invest in America, Donald Trump!' he bellowed to cheers from the audience.

Icahn said after the rally that Sanders isn't looking at the big picture when it comes to his Atlantic City investments.

'Few would disagree that the Taj would have closed with thousands of job losses if I hadn’t come in and provided tens of millions in capital to save it and save those jobs,' he said in a statement.

The business magnate brought up another hotel and casino he owns in Atlantic City and wrote, 'The same thing would have happened at the Tropicana if I hadn’t become involved, risking close to $100 million, to make it one of the few success stories in Atlantic City, and saving and creating thousands of jobs along the way.'

HEYDAY: This 2007 photos shows Trump Plaza at its height. Trump was only a partial owner of Trump Plaza when it closed down in 2014 and sued the corporation in control for allowing it to fall in disrepair

Donald Trump is pictured here at a rally in Spokane, Washington, on Saturday. The last Republican standing, he's now the party's presumptive nominee- putting an even bigger target on his back than before

Sanders held his feet to the fire today, and Icahn's, during a morning rally aimed at firing up his supporters ahead of New Jersey's June 7 primary.

Icahn said Sanders attacked him without 'even bothering to give me a call to hear my views and the real facts.'

'UniteHere, the Atlantic City union, has squeezed and squeezed the city’s most important employers and in the process has forced five casinos to close with thousands of jobs lost,'he said in the statement on his website.

The group's health care fund, he said, 'made over $250 million in the past few years due to forcing companies into their exorbitant health plan, or else face labor disruption such as strikes.'

'It is reprehensible that the union should make this type of money which benefits their top executives, while thousands and thousands of workers are losing their jobs.'

He agreed with Sanders, however, that the income gap in the country 'is a major problem' and concurred '(with certain exceptions) that those that manage capital, as well as many CEOs, are ridiculously overpaid.'

'If this problem is not addressed, there may well be disastrous consequences for the country,' said Icahn, who has rejected Trump's solicitations to become his Treasury Secretary if he wins the general election.

Sanders said as president he would tell the Icahns, Trumps and billionaire class, 'You guys are not going to get it all

Now that he's the only Republican running, Trump does not have to compete in New Jersey, where his business record drew guffaws from Sanders backers this morning.

Democrats are still battling it out. Sanders' fate in the race relies on big wins in New Jersey and California on June 7.

Trump believes he can bring some of Sanders' supporters over to his side if the U.S. senator is unsuccessful in his bid against Hillary Clinton.

Attendees of Sanders' Atlantic City rally signaled that would not be the case. In addition to repeated booing when Trump's name was mentioned, more than a dozen of Sanders loyalists said today they would not vote for him in November.

Trump Plaza is a property of Trump Entertainment Resorts. It closed on September 16, 2014, after 30 years in operation, putting more than 1,000 people out of work.

A year before, the property had an interested buyer but Icahn, acting as the senior lender on the mortgage, declined the deal because the price point was too low.

A month before the hotel closed Trump filed a lawsuit to have his name removed from the outside of the building because he was no longer involved with the Trump entertainment brand.

Trump accused the corporate entity, which he no longer controlled, of running the Atlantic City properties into the ground.

A casino worker holds a sign critical of billionaire Carl Icahn, who owns the Tropicana and Trump Taj Mahal casinos in Atlantic City, N.J,. during a protest outside the Tropicana on Friday

He told the Associated Press at the time, 'I've been away from Atlantic City for many years. People think we operate [the company], and we don't. It's not us. It's not me.'

Trump did retain a 10 percent stake in the company, that came about as part of a prior bankruptcy proceeding, of which there were four total, so that it could continue to use his name.

The Taj Mahal threatened to close down in 2014 if unions did not back down from a healthcare and pensions dispute. In the end the casino stayed open, and the benefits were not restored.

A real estate mogul who has based his appeal to Americans on his ability to make good deals, Trump faced scrutiny in the second GOP presidential debate over the collapse of his casino empire in Atlantic City.

His holding also included Trump Marina, sold off in 2011, in addition to Trump Plaza and the Trump Taj Mahal.

Trump said then, as he was under fire from Carly Fiorina, 'Almost everybody in Atlantic City is in trouble. Atlantic City is a disaster. And I did great in Atlantic City. I knew when to get out. My timing was great.'