1) During the national anthem, normally the players stand with their hands over their hearts, to pay homage to their country. 2 °) In this image, Colin Kaepernick knelt down and put his hand over his mouth, to take a stand against police violence against blacks. 3) People have criticized the American football star for his attitude. They found it disrespectful 4) But the sportsman did this to educate people about the problem of police brutality against blacks in the United States.
