From Do the Right Thing, discuss how diversity is a source of strength and challenge at Sal's.

Like so much else in Lee's film, there is no easy answer
here.  On one hand, diversity is a source of strength in the restaurant as it helps to
make Sal's a part of the neighborhood.  In a particularly poignant moment between Pino
and Sal, he tells his son that he reveres the fact that his pizzeria has been in the
neighborhood for so long.  The fact that the neighborhood kids eat his food and have
consumed his food for so long is a source of pride for him and a representation of the
strength of diversity present.  Another instance where diversity possesses strength is
the bond between Mookie and Vito, where a man of color and a White man can share a
positive relationship.  To an even larger extent, diversity can be seen in Pino's love
of celebrity.  Pino loves "Magic, Eddie, and Prince," and this is a reflection of
diversity, albeit on a much smaller level.

Yet, diversity
might not be present in terms of diversity of thought.  The sequence where each member
of an ethnic group spouts off the cultural stereotype of another is a reflection of how
diversity can prove to be challenging.  Another instance of this would be Buggin' Out's
fundamental criticism of Sal's.  While he might have taken his claims to a bizarrely
intense level, the base has some merit.  Since most of Sal's customers are people of
color, it might be more representative to have "brothers on the wall."  It is a moment
where diversity proves to be challenging.  Finally, Mookie's throwing the garbage can,
precipitated by Sal's misapplication of anger towards Radio Raheem's radio, and the
intensity of seeing one of their own killed at the hands of police officers creates a
tableau where diversity can cause challenges, if not understood properly and if not
revered in an appropriate light.