"Stubbornness in the head, courage in the heart, pride in the soul, and on the face what is called a cheek": Who is Nikola Marchetić, the student who gave a speech in Loznica?

Nikola Marčetić, a student of the Faculty of Musical Arts, spoke at the "March on the Drina" protest in Loznica, delivering an impressive speech that was reported by numerous media.