Why the 2004 movie 'CRASH' is so profound?

We are told, taught and instructed to look at diverse populations and nationalities as homogenous. Asian, Middle East, African, Indian not distinguishable unless further clarification is made in embarrassment and ignorance in our general conversations.

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So what's this subs thoughts on crash (2004)? It is now mainly known as one of the worst best picture winners and also one of the most undeserved, so i want to