In this study, we examine data from the popular Russian social network "VKontakte" to understand what types of discourses on the topic of QR codes are spread in it, including discourses related to protests. Clustering based on the doc2vec algorithm proved to be an effective method to group the communities by related topics. In particular, this approach allowed us to detect a cluster of communities representing op- ponents of QR code technology related to vaccination certificates from COVID-2019.