Far-right commentator Matt Walsh explains the "science" of why mermaids can't be Black

As hype builds around Halle Bailey in The Little Mermaid, far-right troll Matt Walsh explains why it's scientifically incorrect to have cast a Black person in the role:

"From a scientific perspective, it doesn't make a lot of sense to have someone with darker skin who lives deep in the ocean."

Sadly but predictably, Walsh's is not the only racist response: