Freak shows are not as unethical as they are perverse(but so are many forms of entertainment). What people didn't realize was by taking away such things...and being what the people of the time considered more ethical..they were removing the ability of many unusual people to have employment where they could take care of themselves rather than relying on others. so...I say, there's nothing unethical about it.....but I wouldn't watch it. But I also wouldn't watch mud wrestling.
It's perfectly fine I wouldn't worry.
Don't worry about it, everybody knows midgets don't have feelings,much less human rights.