The state of Serbia has launched a campaign on the occasion of the Day of Serbian Unity, Freedom and National Flag, inviting the people to display and salute the flag on 15 September, on the occasion of the holiday. In the videos that appeared on social networks, academician Dušan Kovačević and actor Petar Božović, with the anthem Bože pravde (God of Justice) heard in the background, remind us of the glorious Serbian history.