This master thesis investigates the role of TikTok in the dissemination of radical right-wing ideas and the potential impact on users. A mixed-methods approach, combining quantitative content analysis and netnography, was employed to comprehensively analyze the prevalence, nature, and engagement with extremist content on the platform. The quantitative analysis examined 350 TikTok videos, out of which 208 were identified as propagating radical right-wing ideologies. These videos received significant engagement, with an average of multiple hundreds of thousands of views. By scrolling through the TikTok For You page over a period of seven days, the researcher fell into a hole of extremism, radicalization, conspiracy theories and extreme right-wing ideas. Netnographic exploration provided a deeper understanding of users“ emotional experiences and the strategies employed by creators to amplify their message. The findings highlight the need for improved content moderation and regulation on TikTok to address the challenges posed by the unregulated spread of extremist ideas. This research contributes to the growing body of literature on social media“s influence on ideological polarization and underscores the importance of fostering responsible digital interactions in the digital age.