I was simply talking about a piece of the article which said:
"And some of the jokes that drive home the more serious points—like Zimmerman's quick receipt of justice once he shoots a white kid—lack the subtlety of the episode's best moments. But these quibbles are minor. There are moments that are as sharp as anything…

Why do they need subtlety? Whats wrong with bluntly showing the truth or something that happens frequently.