The popular app has now deleted the videos, all of which featured a "sickening" anti-Semitic song that made reference to Auschwitz.
Responding to the situation, Stephen Silverman, the director of investigations and enforcement for the Campaign Against Antisemitism, told the BBC: "It was incredibly distressing to watch this sickening TikTok video aimed at children, showing a swastika-bearing robot grabbing and incinerating Jews, as the music poked fun at Jewish men, women and children being killed with poison gas at Auschwitz.
"TikTok has a particular obligation to tackle this content fast because it specialises in delivering viral videos to children and young adults when they are most impressionable, and yet our research has shown that TikTok has become one of the fastest vectors for transmission of memes mocking the Holocaust."
Meanwhile, a TikTok spokesperson explained: "Keeping our users safe is a top priority for TikTok, and our community guidelines make clear what is not acceptable on our platform.
"We do not tolerate any content that includes hate speech, and the sound in question, along with all associated videos, have now been removed.
"While we will not catch every instance of inappropriate content, we are continuously improving our technologies and policies to ensure TikTok remains a safe place for positive creative expression."