One of the issues that some people have had with Darren Aronofsky’s Noah — it was never a big-enough deal to become a full-fledged controversy, per se — concerns the ethnicity of the actors.
The film depicts the annihilation of the entire human race, except for one family that will go on to produce the entire human race as we know it today — so it seems a little odd to some people that pretty much every character we see in this film fits into a single ethnic category, i.e. Caucasian.
It seems even more odd when one considers that the human race was entirely dark-skinned at first, and that lighter skin was a later genetic mutation that emerged as certain population groups moved “into areas of low UV radiation”. The film flips this around by positing that the entire human race was light-skinned at first, or at least right after the Flood, and thus darker skin must have evolved later.