In the movie Do the Right Thing, how do the characters feel when dealing with people from different cultural, ethnic, and racial backgrounds.

I think that there is not going to be a direct answer in
this question because there is not a direct answer offered in the movie.  For example,
Mookie might demonstrate some initial apprehension meeting new people who come from
different backgrounds, but it is shown that he is able to work with anyone, once these
initial presuppositions are put to the side.  He works with Pino, who has nothing but
contempt for those who come from a different background.  Vito, Pino's brother, has
little problem interacting with those who are different from him.  He is able to
represent both the White majority and also build bridges with those who are different
from him, in particular, those who live in the Bed- Stuy neighborhood.  Sal has been
building those very bridges for over two decades in the film.  Yet, in the most critical
of moments, Sal is unable to understand Radio Raheem, calling his music "Jungle music"
and denigrating much in which he believes by using the "N" word.  Senor Love Daddy might
be the most effective in being able to deal with those who are different, as he calls
for a stop when each ethnicity is misrepresenting the other one.  Indeed, it is here
where Lee presents the reality that those who are different from one another might
possess different tools in order to work with those who come from different backgrounds
or identities.