It`s the flag of the Chechen Republic, who's inhabitants are one of 3 original people of Russia. It also says "BORZ" on the breast of his hoodie, which means "WOLF" in chechen.
Hi, make a reaction to the video of my brother from Moscow, makes drill, he recently started making music, but the video and track are of high quality (blockMoscow) 🇷🇺 1. D4P - Stop Chat #rusdrill Also in the video clip there are eng subtitles