It's unfortunate, but racial tension and racial dynamics can still be an issue in some parts of the United States. While significant progress has been made in terms of racial equality, racism and racial bias persist in various forms. Instances where people are stared at or treated differently based on their race are not unheard of, though it's essential to recognize that experiences can vary depending on the location, context, and individuals involved.
In some areas, especially in diverse urban centers like Chicago, people are generally more accustomed to seeing individuals from various racial and ethnic backgrounds, and such incidents might be less common. However, even in such places, there can still be instances of racial bias or discrimination.
It's crucial to remember that the United States is a large and diverse country, and attitudes toward race can vary significantly from one region to another, and even within different neighborhoods within a city.
It's unfortunate that your friend had to experience such discomfort during her visit. Acts of racism or discrimination are not representative of all people in the U.S., but they do highlight the ongoing need for education, awareness, and efforts to foster greater understanding and acceptance among all communities. The U.S. continues to work towards building a more inclusive and equitable society, but it is a journey that requires ongoing efforts from individuals, communities, and institutions.