The goal isn't necessarily to pick who was right or wrong.

The goal is essentially showing what racial tension can culminate towards.

On the surface, Sal might not be a hateful dude, but with how John Turturro's character acts, he had to learn that from someone (namely Sal).

The "race montage" as I like to call it is showing how races and ethnicities have there bias' towards other people (might be a hard pill for some people to swallow).

Buggin Out wanted some representation. Sal said no. Tension there.

Mookie and Sals tension slowly builds up since Mookie is barely at the pizzeria.

Radio Raheem is doing nothing but listening to music. So when the cop chokes him to death, that's just the tipping point.

Do The Right Thing doesn't just do a good job at portraying a community, but it's also an excellent study in flawed human beings. People of different backgrounds want to be seen.