The racist Manhattan attorney who was filmed on Wednesday berating workers at a midtown restaurant for speaking Spanish was also caught on tape last year unleashing a profanity-laced tirade at Jewish supporters of Palestine.

Aaron M. Schlossberg was caught on camera Wednesday threatening to call ICE on two friends speaking Spanish to each other in a restaurant.

He was filmed lambasting the manager of Fresh Kitchen on Madison Avenue for allowing his staff to speak Spanish in 'my country' and raged about 'paying for their welfare' in a video filmed on Tuesday.

The 42-year-old, a registered Republican who has donated to Donald Trump, owns his own commercial law firm and boasts of being fluent in Spanish in his own work biography.

It has been revealed that Schlossberg was seen in a video recorded on May 25, 2017 during a demonstration with Trump supporters who protested Palestinian-American activist Linda Sarsour for her views on Israel. The video was posted by journalist Isaac Saul of A Plus.

Schlossberg attended the rally in support of Milo Yiannapoulos and Pamela Geller, who were protesting a commencement speech by Sarsour.

The racist customer lambasted the manager of Fresh Kitchen on Madison Avenue for allowing his staff to speak Spanish in 'my country' and threatened to call federal immigration officials

They spoke at the May 2017 rally in Manhattan denouncing Sarsour as an anti-Semite because of her support for the campaign to boycott, divest from, and sanction Israel for its policies toward the Palestinians.

Sarsour has denied that she is an anti-Semite. She says her criticisms are of Israeli behavior in the occupied territories.

Schlossberg was pictured among Trump supporters shouting 'you are not a Jew' at a rabbi who he believed to be a counter protester, according to Saul, who published a video of the incident.

After the video filmed on Tuesday went viral the man was widely named as Aaron M. Schlossberg, 42, who runs his own commercial law firm and boasts of being fluent in Spanish in his own work biography

Schlossberg is seen in the video with other Trump supporters yelling profanities at a group of ultra-Orthodox Jews who oppose the State of Israel on religious grounds and giving them the middle finger.

The lawyer's rant at the restaurant on Wednesday began after he saw a lunchtime regular speaking Spanish with a Hispanic employee, the manager told the New York Daily News.

'They were speaking Spanish because they are friends,' he said. 'He got mad, waiting in line for his food.

'He's a customer, so I had to stay professional and ask him to leave. That's what I did.'

'Your staff are speaking Spanish to customers when they should be speaking English - this is America,' he ranted at the Fresh Kitchen manager while wearing a white work shirt and black pants.

In the background other customers can be heard calling him 'ignorant' and saying 'yes, this is America'.

'I will be following up because my guess is there not documented and my next call will be to ICE,' Schlossberg says. 'I will get each of them will be kicked out of my country.

'I pay for their welfare, I pay for their ability to be here. The least they can do is speak English.'

Schlossberg also mocked a woman eating a sandwich, telling her: 'Maybe you shouldn't eat that sandwich... maybe you should take a break from the food.'

NYU legal ethics professor Stephen Gillers said lawyers like Schlossberg can be disbarred for conduct outside work, but predicted he would only receive a 'private admonition'.

'Mr. Schlossberg could be disciplined for this conduct but it will not lead to disbarment,' Gillers told Forward.

'A lawyer can be disciplined for conduct even if the conduct is unrelated to work for a client.

'Factors a disciplinary committee will consider in deciding what if any discipline is warranted include extenuating circumstances and whether Mr. Schlossberg has prior discipline.

'If he does not, I think the most serious discipline he could face would be a private admonition if he has a clean record. That means the discipline will not become public.'

Schlossberg attended the George Washington University Law School, according to his LinkedIn, which noted he studied abroad in Madrid while at college.

As well as fluent Spanish, Schlossberg claims to be able to speak French, Hebrew and Mandarin Chinese.

The Law Office of Aaron M. Schlossberg was founded in June 2012 and specializes in 'complex commercial matters', including insurance.

It is based on Madison Avenue and offers consultations in Spanish, French and Hebrew.

Its website features testimonials from clients paying tribute to Schlossberg's 'professionalism' and 'determination' on cases.

His law office gave a $500 donation to Donald Trump on April 5, 2016, according to OpenSecrets.org.

The Fresh Kitchen branch where Schlossberg began ranting at a customer who was speaking Spanish to a Hispanic employee, as he did on a regular basis

Schlossberg's LinkedIn also lists him as having attended The Haverford School in Philadelphia in 1994, before going to John Hopkins University where he graduated in 1998 with an English degree.

At John Hopkins he wrote for the student newspaper, The News Letter, his profile states.

He graduated from George Washington Law School in 2002 and clerked for New Jersey Superior Court Judge John Peterson.

In 2003, he worked as an associate attorney at The Law Offices of Michael Haskel in Mineola, New York, before moving to Ohrenstein & Brown two years later.

He then moved to Havkins Rosenfield Ritzert & Varriale and served as an associate from 2005 to 2013 before setting up his own practice a year later.

The Law Office of Aaron M. Schlossberg was founded in June 2012 and specializes in 'complex commercial matters', including insurance

His website and social media pages have now been bombarded with abuse from people who have seen the viral video.

The New York State Bar Association said on Wednesday that Schlossberg is not a member.

New York state law does not require attorneys to be members of the bar in order to practice.

The NYSBA is a 'voluntary membership bar association, and attorneys are not required to belong to NYSBA in order to practice in New York,' it said in a statement to DailyMail.com.

'NYSBA has no statutory or regulatory role relating to the certification or discipline of attorneys in New York State.'

'Complaints against attorneys are investigated by grievance committees appointed by the Appellate Division of State Supreme Court,' the NYSBA said in a statement.

Calls to the Appellate Division of the State Supreme Court went unanswered as of Wednesday evening.

The front desk at Schlossberg's office building was turning away all visitors at his request on Wednesday.

The video of Schlossberg raging in Fresh Kitchen was initially posted on Facebook Edward Suazo, who said his wife was at the restaurant when the rant occurred.

'What a big man talking down to couple of women and a helpless employee,' Suazo wrote.

'I wish someone tells me I can't speak in my native language ! First of all they wasn't talking to you!'

DailyMail.com has reached out to Schlossberg for comment.