An Israeli man who was beaten in an anti-Semitic attack while wearing a traditional Jewish skullcap in Berlin told German television on Wednesday night that he was not Jewish but wanted to find out whether it was safe to walk in the street dressed as a Jew.

“I am not Jewish, I am an Israeli and I grew up in Israel in an Arab family,” Adam Armush, 21, told broadcaster Deutsche Welle. “It was an experience for me to wear the skullcap and go out into the street yesterday.”

He said he filmed the attack on him and a second man as evidence “for the police and for the German people and even the world to see how terrible it is these days as a Jew to go through Berlin streets.”

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German Chancellor Angela Merkel condemned the attack. “This is absolutely a terrible incident and we must act,” she said. “The fight against such anti-Semitic acts must be won, the reputation of our state is at stake, and we are committed to it with all our strength.”

Justice Minister Katarina Barley condemned the incident as a “disgrace” for German democracy after the brief video surfaced on news websites and went viral.

“It is unbearable that Jews in Germany are attacked on the open street in the middle of Berlin,” Barley tweeted.

Foreign Minister Heiko Maas said Germany “bears a responsibility to protect Jewish life” more than 70 years after the end of the Holocaust in which the Nazis murdered six million Jews.

The two men in their early 20s, wearing skullcaps known as kippas, were accosted at the Helmholtzplatz, a public park in the Prenzlauer Berg district of the capital by three young men, at least one of whom spoke Arabic and has been reported to be Muslim.

Armush filmed one of them men whipping him with a belt while calling out, “Yahudi,” or “Jew” in Arabic, before he is stopped by a passerby.

The video subsequently shows Adam with a bruise on his torso.

In a video interview with the Bild newspaper, Armush said the main attacker seemed to have a “Syrian dialect.”

“I am very sad but at the same time I’m happy that we were able to achieve something with the video,” he said, speaking fluent German.

“I am a little afraid now, and disappointed,” he said, adding that he nevertheless planned to continue wearing the kippa in Berlin.

“I hope the police will be able to find the attackers soon — the police were very responsive.”

Israel’s Kan public broadcaster located Armush and interviewed him in Hebrew near his home in Prenzlauer Berg.

“It happened right here, next to my home, when I was on my way to the train station with my friend,” Armush told the network. “The truth is, I’m surprised something like this happened to me. I’m still in shock.

“We came out of our home, my friend and I, wearing our kippas, and walked down the street. We weren’t talking with anyone else. Three people came from over there” — he points down the street — “and started cursing us from over there. We didn’t talk to anyone, didn’t answer them. So when they kept cursing us, my friend asked them to stop cursing, and that got them angry. So one of them ran at me. I immediately felt it was important to film, because I didn’t think we could catch him before police arrived. I wanted to give police something to go on.”

אדם ארמוש, הצעיר שהותקף ברחובות ברלין משום שחבש כיפה, משחזר את התקרית בשיחה עם כאן חדשות @antonia_yamin pic.twitter.com/wxGC1fbT8Y — כאן חדשות (@kann_news) April 18, 2018

The head of the Central Council of Jews in Germany, Joseph Schuster, told AFP he was “shocked” by the incident, noting that it had occurred in a “bourgeois” area and not in a “majority Muslim quarter.”

“This case must be met with the full force of the law,” he said.

A number of high-profile incidents in recent months have raised alarm bells about a possible resurgence of anti-Semitism in Germany from both the far-right and a large influx of predominantly Muslim asylum seekers since 2015.

Merkel created a new position of commissioner to fight anti-Semitism under her new coalition government sworn in last month.

According to the Jewish Forum for Democracy and Against Antisemitism, which posted online about the incident on Tuesday, Berlin police have launched an investigation.

“It is unbearable to see a young Jewish man being attacked on the street in the well-situated Prenzlauer Berg district of Berlin because he is recognized as a Jew,” Levi Salomon, spokesman for the group, said in a statement. “This shows that Jewish people are not safe here either.”