Theres four types of magic, white, red, black and green.
Depending on countries laws yes you can be changed with murder.
Africa, Australia, South Pacific Islands, South America, North America, Italy, Greece, Cuba, Haiti most of the EU and Russia these laws are still in place. Those are ones I know of. I don't think many countries don't have a law somewhere about it.
But you curse or hex another it will come back on you 10 fold.
Never do it yourself there are other ways.