I can’t vouch for the authenticity of this video. It appears to show a young Muslim man grabbing a microphone from a musical group at a sidewalk café and using it to hector customers about their culinary behavior during Ramadan. After that he overturns a table and chair.
However, the whole thing may have been a hoax staged for the camera. Who knows?
Many thanks to Nathalie for the translation, and to Vlad Tepes for the subtitling: