Most people don't even know where their fear of cats in general and black cats in particular came from. It goes back to the Puritans that were the first European settlers in the U.S. and their fear of witches, the same fear that caused the Salem witch trials. They believed that witches used cats, black cats in particular, as familiars to contact evil spirits. They also believed they could use their cats to carry out their evil spells.
Growing up we always associated them with witches, Halloween etc...
Exactly what I was going to say.I don't know why some people don't like black cats. To me that is "racist". It's like saying you don't like people with black hair or black skin.