From wiki
Satire is a genre of literature, and sometimes graphic and performing arts, in which vices, follies, abuses, and shortcomings are held up to ridicule, ideally with the intent of shaming individuals, corporations, government, or society itself into improvement.[1] Although satire is usually meant to be humorous, its greater purpose is often constructive social criticism, using wit to draw attention to both particular and wider issues in society.
This is very apparent in The Boondocks where each character has a strong personality and reflect some aspect of Black American culture.
McGruder created a show that displayed the varying perspectives of individuals in the Black community. It spoke about Black culture in a way that only another Black person can. He featured characters that were caricatures of various Black identities – Huey is the political rebel, Riley is the ignorant kid from the hood, and Uncle Ruckus is a Black man that hates Black people.
All of these characters were important because it provided McGruder with the space to encompass various feelings and thoughts. The show was poignant and purposeful in its judgment, but still gave the audience the ability to formulate their own opinions on different subject matter.
(from https://www.inverse.com/article/19303-why-we-need-the-boondocks-now-more-than-ever)
I'm talking about the show since I've seen more of that than I have read the original strip, but with these caricatures, McGruder was able to showcase different stances on various topics from episode to episode from homoeroticism in rap/hip-hop, politics (oh so much politics), to white gangsters appropriating Black culture.
The Boondocks was analyzing the current state of American culture with a Black lens, pointing out the flaws and ineptitudes of a multi-faceted society.
It's much in the same way as South Park. Now that's some strong satire. Greatest recent example being the memberberries, that whole arc comments on people's current obsession with nostalgia and how it can be a drug of sorts to keep people complacent and unwilling to accept the harsher realities of the society we're now in.