When a leader does such things they are trying to make the people proud of their nation. This is what Nationalism is.
Nationalism refers to the promotion of a nation's ideals to ensure that citizens are proud and loyal to their country. Nationalism is not a bad thing but can lead to ultra nationalism when people actively put others down for the interest of their nations. The leader in the above is instigating a very dangerous type of Nationalism by suggesting that the people are Superior to others but it is Nationalism regardless.
