>>Understanding that a Chinese restaurant serving Chinese food is not racist doesn't require much effort. Understanding the definition of racism doesn't either.
>
>What about significantly higher percentage of indians there for low end jobs like kitchen cleaning and food slicing for the aspiring ones ?

There has always been a problem with companies here taking advantage of minorities and immigrants.

You might find this article and interesting read:
https://www.brookings.edu/articles/do-we-really-want-immigrants-to-assimilate/

..from that article:
"...Immigrant leaders and advocates claim that America is a racist society that will not allow “people of color” to become part of the mainstream of American life. Alternatively, it is argued that the assimilation of such individuals into that mainstream is an insidious process that robs them of their history and self-esteem. No one ever bothers to explain how both claims can be true...."

Now all that being said, I assume you understand the difference between an Indian restaurant serving Indian food and a restaurant taking advantage of Indian workers.