why does the white man in the white suburban get angry

They are listening to music—a new Deuce Diggs song—and turn it up so loud the entire car is vibrating with the bass. When they stop at a red light, Jus looks over and sees a white man driving a Chevy Suburban giving them a dirty look. Jus turns down the music. He is uncomfortable—the look on the man's face reminds him a little too much of his encounter with Officer Castillo in Chapter 1. When the light turns green, Manny turns the music back up, and they drive alongside the Suburban until the next red light. At the next light, the guy yells at them to turn the music down. Manny teases the man, saying that he can't hear him over the music. Jus suggests that they turn the music down, but Manny says that he won't do what a white person tells him to do in his own car. The white man gets extremely angry and starts yelling slurs at them.