If you read nothing else about the prosecution of Abdul Rahman, the Afghani who is threatened with execution for converting to Christianity, read Eugene Volokh's It's Not Islamophobia When There Really Is Something To Fear. A key point:
This is telling evidence, it seems to me, that there is something very wrong in Islam today, and not just in some lunatic terrorist fringe. Doubtless many, I would hope most, Muslims would not endorse executing converts. But a strand of the religion, and a strand that is not far from the levers of political power in at least some countries, does seem to endorse such a position. This is deeply dangerous, most obviously to residents of countries in which radical Islamism has broad support, but also to residents of Western countries as well.
There are some who are not yet ready to be admitted to the community of civilized nations.