"death sentence for becoming a Christian"

See the article Afghan kidnappers 'want convert'

The kidnappers of an Italian journalist in Afghanistan have offered to free him in exchange for a Christian convert who fled the country, an aid agency says.

Photojournalist Gabriele Torsello was seized last week while travelling on a bus in southern Afghanistan.

The kidnappers will free Mr Torsello, a Muslim convert, if Abdul Rahman returns from Italy where he was granted asylum earlier this year, the aid agency says.

Mr Rahman had escaped a possible death sentence for becoming a Christian.

He had been charged with rejecting Islam and released this March after being deemed mentally unfit to stand trial on a charge of apostasy.

I wonder what moral relativists have to say about this?