Disturbing footage has emerged of an Orthodox Jewish man being assaulted by a group of seven teenagers as he walked down a street in Brooklyn – in what has become the 14th documented incident of anti-Semitic violence in New York in less than four weeks.

The incident occurred in Crown Heights on December 24, just four days before an assailant - believed to be 37-year-old Grafton Thomas - stabbed five people with a machete inside a rabbi’s home as they celebrated the seventh night of Hanukkah in Monsey, New York, late Saturday.

In the newly uncovered footage a Jewish man, who has not been identified, can be seen walking down Lincoln Place near Albany Avenue when he encounters a large group of black teenagers.

The man is seen attempting to avoid their path, but tries to walk around the group one of the teens throws a folding camping chair at his head and knocks him off balance.

Startled, the man attempts to walk away from the group at speed but is chased by two of the teenagers, who run toward him and then take it in turns to punch him.

The incident occurred in Crown Heights on December 24 as a Jewish man, who has not been identified, was walking down Lincoln Place near Albany Avenue when he encountered a large group of black teenagers

The man can be seen attempting to avoid their path, but as he begins to walk past them one of the teens throws a folding camping chair at his head, knocking him off balance

Meanwhile, a third member of the group can be seen picking up the folding chair from the ground and running back toward the victim, jumping up into the air and throwing the chair at him once again.

The group of teens then sprint away into in the opposite direction, venturing deeper into the Crown Heights area.

Jewish Future Alliance founder Yaakov Behrman posted surveillance video of the shocking incident to Twitter, but said that the victim never reported the attack to police as he was fearful the attackers would find out his identity and harm him again.

‘This incident demonstrates that there are many unreported incidents in New York,’ Behrman wrote.

‘The attack occurred last Tuesday and was never reported to NYPD or media. I first learned of it Sunday evening and spoke to victim Monday and obtained footage.’

The same group of teenagers were also recorded on surveillance camera carrying out a second brutal attack on a 56-year-old Jewish man on Union Street moments later.

Startled, the man attempts to walk away from the group at speed but is then chased by two of the teenagers, who run towards him and then take it in turns to punch him

The same group of teenagers were also recorded of surveillance camera carrying out a second brutal attack on a 56-year-old Jewish man on Union Street moments later

On this occasion, the victim was punched in the back of the head by one member of the group and then thrown to the ground.

TIMELINE OF ATTACKS ON JEWS IN NEW YORK SINCE HANUKKAH BEGAN Dec. 28 - A suspect, believe to be Grafton Thomas, 37, enters a rabbi's home during a Hanukkah celebration in Monsey and attacks five with a machete Dec. 27, 7am - Man in hoodie threatens to shoot up Lubavitch headquarters in Crown Heights, Brooklyn Dec. 27, 12:40am - Tiffany Harris, 30, is arrested for allegedly slapping three other women in the face and head on a Crown Heights corner Dec. 26, 3:20pm - Homeless woman, 42, yells anti-Semitic slur and then strikes a Jewish woman in the head with her bag in front of her three-year-old son Dec. 25, 1am - A Jewish man wearing a skullcap while walking in the Borough Park section of Brooklyn was punched in an unprovoked attack Dec. 24 - A 25-year-old Jewish man had a drink thrown at him by a group shouting anti-Semitic slurs Dec. 24, 6pm - A Jewish man, 56, was punched in the head by one person as the same group filmed the incident and laughed Dec. 24, 5:30pm - A Jewish man is attacked by a group of teens with a camping chair and is punched several times Dec. 23 - A Miami man was arrested for making an anti-Semitic remark and attacking a man in midtown Manhattan Advertisement

Others group members were seen taking out their cell phones and recording the incident. Surveillance video also showed the teenagers laughing and cheering as the attack took place.

As the teens began fleeing down Union Street towards Albany Avenue, volunteers from the Crown Heights Shomrim gave chase to the group as they made their way down Albany to President Street.

A 911 call was made, but in the few minutes it took for the police to arrive, the group made their way across Eastern Parkway and then split up into the Albany Avenue projects.

A police report was filed over the incident, and the case has been referred to the Hate Crimes Task Force.

Shomrim also obtained video footage of the assault and was able to provide it to the NYPD.

Police are searching for the attackers, however no arrests have yet been made.

The NYPD has not yet responded to a DailyMail.com request for comment as to whether the first incident is currently being investigated or being treated as a hate crime.

Emergence of the first incident on December 24 comes as the 14th reported incident of anti-Semitic violence in New York since December 8.

Following a machete attack at a Hasidic rabbi's home in Monsey late on Saturday that injured five, New York Governor Andrew Cuomo attributed the alarming rise in anti-Semitic violence in the city to the hate that is spreading ‘like cancer’ across America currently.

‘This is an intolerant time in this country. We see anger, we see hatred exploding,’ Cuomo said. 'It is an American cancer that is spreading in the body politic.'

Following a machete attack at a Hasidic rabbi's home late on Saturday that injured five, New York Governor Andrew Cuomo attributed the alarming rise in anti-Semitic violence in the city to the hate that is spreading ‘like cancer’ across America currently

Grafton Thomas, 37, is accused of stabbing five people with a machete inside a rabbi’s home as they celebrated the seventh night of Hanukkah in Monsley, New York, late Saturday

The attack, said to be orchestrated by Grafton Thomas, came as the latest in a string of similar assaults targeting Jews in the region, including a massacre at a kosher grocery store in New Jersey earlier this month and seven other anti-Semitic incidents over the first seven nights of Hanukkah, which began on December 23.

In response to the recent spate of anti-Semitic attacks, New York Mayor Bill de Blasio announced plans to increase police presence in affected communities.

Besides making officers more visible in Borough Park, Crown Heights and Williamsburg, police will boost visits to houses of worship and some other places, de Blasio tweeted.

'Anti-Semitism is an attack on the values of our city - and we will confront it head-on,' de Blasio, the Democrat, wrote.

At around 12:40am on Friday, a Brooklyn woman screamed 'F*** you, Jews!' and then slapped three other women in the face and head after encountering them on a Crown Heights corner.

The victims, who range in age from 22 to 31, suffered minor pain, police said.

Tiffany Harris, 30, was arrested on a hate-crime harassment charge.

Also on Friday morning, an unidentified man wearing a hoodie walked into the headquarters of the ultra-Orthodox Lubavitch movement on Eastern Parkway in Crown Heights and stated he was going to 'shoot up the place', according to WABC-TV.

The man then walked away, in the direction of the Utica Avenue subway station.

A media report on Friday indicates that a man threatened to shoot up the headquarters of the ultra-Orthodox Jewish Lubavitch movement on Eastern Parkway in Brooklyn (seen in the above undated file photo)

The Lubavitch movement is one of the largest sects of Hasidic Judiasm. Also known as Chabad, it has made Brooklyn the center of its activities since the leaders of the movement were forced to flee Europe at the start of the Second World War.

Also, at around 3.20pm on Thursday, a Brooklyn woman walking out of a Dunkin' Donuts with her three-year-old son in Gravesend was attacked by a homeless woman who hit her in the head with her bag, according to police.

'You f***ing Jew! Your end is coming!' the suspect, Ayana Logan, 42, is alleged to have said to the victim, who immediately alerted authorities and Logan was apprehended moments after.

Just over a day earlier on Wednesday morning, a Jewish man wearing a skullcap was punched while walking in the Borough Park section of Brooklyn in an unprovoked attack near 13th Avenue and 48th Street at around 1am.

No arrests have yet been made in that incident.

Also on Tuesday, another anti-Semitic incident took place in the Crown Heights area of Brooklyn.

A 25-year-old man was accosted by several people on Kingston Avenue who made anti-Semitic statements.

'F*** you, Jew!' one of the people yelled in his direction, before dousing him with a Slurpee drink.

Just 24 hours before, a Miami man was charged with hate-crime assault after police said he made an anti-Semitic remark and attacked a man in midtown Manhattan.

The 65-year-old victim was punched and kicked, suffering cuts, police said.

He had been wearing a yarmulke, according to former state Assemblyman Dov Hikind, who has founded a group dedicated to combating anti-Semitism.

Steven Jorge, 28, is being held without bail, and a judge ordered a psychiatric exam for him, court records show.

'It seems like it's open season on Jews in New York City,' said New York City Councilmember Chaim Deutsch in response.