One of the villains in Super is called "Goku Black". So they're planning to shoot Goku, thinking he's Goku Black. Trunks explains that no, they are mistaken.

The joke of course being that Trunks is a virulent racist who follows the BLM hashtags on twitter just to post about how police shootings of African-Americans were all the fault of the behaviour of the person who was shot.

waiting for the first reply to explain how it was their fault.

The more powerful Trunks gets, the more Aryan he gets.

Ones he gets to Super Aryan 3 he transforms into a brietbart writer

But after Aryan Level 3 the next level is having your hair turn bright red (Super Sayian Ginger) and then having your hair turn blue (Super Sayian Smurf.)

In the final battle of the series, Goku attains a new level of power that turns his hair gray (Super Sayian Old Person.)