"They were doing something important: using biting and at times cruel humor to undermine systemic injustice. It’s what satirists have done throughout history.... Ali G is a white imbecile—a delusional cultural appropriator—who steals the fashion and lyrics from his favorite gangsta rap and dancehall idols, from Compton to Kingston.... Like a good bouffon, he undermines that establishment—not the culture he loves and borrows from.... Each of my characters has a specific mechanism to encourage people to drop their guards and show what they really believe, prejudices and all. Borat, an antisemitic journalist, exposes Jew hatred, xenophobia, sexism, and casual racism. Erran Morad, a stereotype of a tough-guy Israeli commando—'I’ve been in 14 terror attacks,' he says in my new movie
Ali G: Who Iz I?, 'and started two'—exposes Islamophobia.... Ali G works on another level. He’s not extreme—he’s just extremely dumb. But his absurd questions lead powerful people to underestimate him and answer in earnest, revealing their own biases...."
Writes Sacha Baron Cohen, in
"Why Satire Is No Laughing Matter" (Time).
According to Baron Cohen, the "bouffon" is a "tradition dated back to 11th century France, where societal outcasts—gay people, heretics, those with deformities—would be let back into their villages once a year to put on shows viciously mocking the ruling class."
Here's an excerpt from that (showing why Baron Cohen is highly motivated to justify his continuation of the Ali G character):