Mermaids

Oh, dear god, y'all!  First things first, not everyone objecting to the casting of the live-action Ariel are doing it for racist reasons.  At least, not that they're aware of.  Some people just don't like change and would be complaining if ANYONE but a blue eyed ginger got the role.  (Personally, I'm just upset that Divine can't play Ursula.) Put on your thinking caps, y'all, we're going in.

POINT: In the original tale, the mermaid is described as having skin "like a rose leaf".  So she was green? The mermaid also dies at the end, so there's that....

POINT: Disney named their mermaid after a male character in Shakespeare's The Tempest.  They gave her red hair for artistic reasons - something about wanting not-a-blond and brunette being hard to animate underwater, if I recall correctly.    There's also something about her being the only redhead in her family, but I'm not sure what version of the tale this came from.  Disney changed the ending.  Ariel is not, and never was, the original.

POINT: In historical sightings - and yes, I have a book here to back me up - merfolk have been described as follows:  Roaring. Scaled even in the human section. Having green hair.  Long green hair. Having purple blood. Mossy hair. Black or tawny skin. Different colors on belly and back. Gray.

I've listed only the descriptions that differ from the European-based archetype.  One description even says they are "frequently taken for Indian women bathing" until the tail is seen. 

POINT:  We're talking about nearly universal folklore.  Cultures all over the world have mermaids, sirens, lorelei, naiads, ri...  I could go on but you get the idea.  Merfolk come in all the same colors as humans.  And a few others if you believe the reported sightings.

POINT: Ariel is a Disney character and they can change her up any way they want. 

I personally won't be seeing the live action movie.  I just don't care for live action versions of classic cartoons.  The only live action Disney remake I've seen was Beauty and the Beast.  I only watched it because I wanted to see how it was possible to make it any more obvious Lefou was in love with Gaston.