Superstition is a phenomenon that I find odious. Misfortune is the pass of the vile, the alibi of the irresponsible. Always. Of course, when it is turned against the defenseless, it becomes an unbearable concentration of cheap cowardice.
This is the case with black cats. Do black cats really bring bad luck? Or do we really want to continue to say that if a black cat crosses your street it will bring you bad luck?
If you are convinced of yes, or if you know someone who still is, maybe a little bit as a joke and a bit really, then a fleeting look at the past could be useful.
In the pre-Christian and polytheistic world, the cat lived happy days, often venerated as a deity. In ancient Egypt, already from the second dynasty (2890 BC), the goddess Basket was represented with the appearance of a cat (black or dark). Goddess of cats but also of women, of fertility, of births and of the house.
Things changed drastically with the advent of Catholicism and in particular during the Middle Ages: