Those giving out racist abuse will be online trolls that live in their mum's back room and probably never been close to dating anyone.

Don't lock them up, force them to face to face the people they abuse from afar and see if they will be as brave then.

If that doesn't work euthanasia is the answer, it's different to the death penalty as honestly you would just be being kind by putting them down as they must live awful and miserable lives to act in such a way.