The reason why people take an oath to support the Constitution instead of the country or the President is because the Constitution is the supreme law of the land, have has power even over the present himself. It is not required that every American take this oath--it is a personal choice. <span />
police brutatlity,inequality
During WW2, America was at war with Japan, and the Americans thought the Japanese-Americans were loyal to Japan and secret spies, so the internment camps were a way to watch over them.