How does martin luther king portray the appalling condition of negro community?(i have a dream

In his speech I have a dream,  this appeals to the negro community because he is talking about his kids on how they should not be judged on tier color of skin but the content of their character meaning,  nobody should be judged on their appearance but by how they act this affects the negro community because in that time colored people were judged based on how they looked.  

Explanation:

read the following texts. text 1 electoral marketing consists of implementing integrated political marketing and social communication techniques, in order to gain the approval and sympathy of the society, building a solid image of the candidate and being able to transmit reliability and safety to the population by raising its concept at the level of public opinion. therefore, electoral marketing is concerned with the formation of the image in the short term. catarin, roberto bianchi. electoral propaganda in media democracy: the victory of emotion in the 2014 presidential election in brazil. 2016. dissertation (masters in communication) - school of communication, education and humanities, methodist university of são paulo, são paulo, 2016 (158 p.)