He straight up murders a Neo Nazi
Otherwise it would be too obvious.
In the words of Ebert:
Some will even find it racist because the targets of the film's hero are African-American, Latino and Korean - with a few whites thrown in for balance.
Btw, the scene with the Korean grocer must be held against the 1992 Los Angeles riots having happened just a year earlier where Korean-Americans were often targeted.
It’s simply about a guy who’s going through a downward spiral and mental breakdown (he has problems…); who is longing for a time which no longer exists in his life.
NO other group of people could have such a movie made about them without it suffering a barrage of critique for its obviously hateful plot.
Edit: not that the creeps in Hollywood would ever allow such a movie but whatever.