Would it be too much to say that the Left makes non-whiteness, or non-Westerness into something sacred? Or perhaps just something so far above us mere white Westerners, that we're not to question it? Is that why we're not allowed to chuckle at Indian accents? Is that why it was Not OK to question or criticize Barack Obama?
People all over the world make fun of accents.
Why? Because it's funny. I laugh at Chicago accents. I laugh at Georgia accents. I laugh at Boston accents. I laugh at New York accents. Additionally, I laugh at Mexican accents, Japanese accents, Indian accents, as well. (Not an exhaustive list.)
Note, I laugh at these accents when they are part of a joke.
It's funny and has been for the history of the world. I sometimes even find people's accents in person amusing (like my co-worker who says CWAW-fee), but I don't laugh at the person because of it.
But of course, as with everything else on the left, you're not allowed to laugh at humor. It's all "problematic" now.