He wants to show viewers that he is concerned about the education of poor minorities. She intentionally stands next to a black student to show the comparison between him and her, where there is no difference between them. He wants to suggest the idea that this student could one day be like him. He wants to give hope to poor minorities that they too can succeed. He is trying to convince viewers that he will not leave poor minorities behind and will help them however he can. When it comes to the manufacturing scene, Obama shakes hands with a woman wearing manufacturing clothes. He also pats the woman on the shoulder to show his understanding of her problem. He wants to appear as someone who knows how to listen to other people's problems. Obama intentionally chose the automaker as the site because he knows that the auto industry is one of the most important industries in America as it creates millions of job opportunities for Americans. He wants viewers to know that he will provide more job opportunities