Why do people of one racial ethnicity feel the need to lump good people and bad people of another ethnicity all together? all people are not alike.

Ethnic Biases: You have have an extremely important question, and you are correct that in fact we are all more alike than we are different. People categorize other ethnic groups because they lack awareness, are narrow thinkers and often have been taught to stereotype rather than developing the skill to access all people based on fact not fiction. Best wishes.