Here's a link to the story without bouncing through facebook...
http://www.foxnews.com/world/2011/09/28/iranian-pastor-faces-execution-for-refusing-to-recant-christian-faith/As far as condemning the Iranians for killing one of their own, for being apostate (religious infidelity). He was raised in Islam, and he turned his back on it to become Christian.
According to a theocratic islamic law, that's capital crime. It's on the books.
It's no more or less arbitrary than many U.S. laws against nudity, though you'd probably only get a citation in the U.S. for that.
You would be better off condemning Texas for killing people who couldn't afford a good enough lawyer, or for killing retards who they got 'confessions' from by telling them to confess in order to get out of trouble.
There's a long list of things that Islam has killed (and in many cases, still does kill) for...
Associating anything with Allah
Murder
Practising magic
Not Praying
Not paying Zakat
Not fasting on a Day of Ramadan without excuse
Not performing Hajj, while being able to do so
Disrespect to parents
Abandoning relatives
Fornication and Adultery
Homosexuality(sodomy)
Usury (Riba)
Wrongfully consuming the property of an orphan
Lying about Allah and His Messenger
Running away from the battlefield
A leader's deceiving his people and being unjust to them
Pride and arrogance
Bearing false witness
Drinking Khamr (strictly translated, "grape wine" or "date wine", but it is interpreted to mean any intoxicant, alcohol or otherwise, used without a truly valid medical reason, e.g. tinctures or other psychoactives are permitted by the law of necessity - "necessity makes the prohibited permitted", the same rule that allows the consumption of pork if starving - if other options are unavailable)
Gambling
Slandering chaste women
Stealing from the spoils of war
Stealing
Highway Robbery
Taking false oath
Oppression
Illegal gain
Consuming wealth acquired unlawfully
Committing suicide
Frequent lying
Judging unjustly
Giving and Accepting bribes
Woman's imitating man and man's imitating woman
Being cuckold
Marrying a divorced woman in order to make her lawful for the husband
Not protecting oneself from urine
Showing-off
Learning knowledge of the religion for the sake of this world and concealing that knowledge
Betrayal of trust
Recounting favours
Denying Allah's Decree
Listening (to) people's private conversations
Carrying tales
Cursing
Breaking contracts
Believing in fortune-tellers and astrologers
A woman's bad conduct towards her husband
Making statues and pictures
Lamenting, wailing, tearing the clothing, and doing other things of this sort when an affliction befalls
Treating others unjustly
Overbearing conduct toward the wife, the servant, the weak, and animals
Offending one's neighbour
Offending and abusing Muslims
Offending people and having an arrogant attitude toward them
Trailing one's garment in pride
Men's wearing silk and gold
A slave's running away from his master
Slaughtering an animal which has been dedicated to anyone other than Allah
To knowingly ascribe one's paternity to a father other than one's own
Arguing and disputing violently
Withholding excess water
Giving short weight or measure
Feeling secure from Allah's Plan
Offending Allah's righteous friends
Not praying in congregation but praying alone without an excuse
Persistently missing Friday Prayers without any excuse
Usurping the rights of the heir through bequests
Deceiving and plotting evil
Spying for the enemy of the Muslims
Cursing or insulting any of the Companions of Allah's Messenger
So, for instance, doing a magic trick that teleported Allah's almighty penis into the Prophet's bottom... during prayer call... well, maybe you shouldn't do that in Iran.