We don’t execute people in this country for ripping a Koran like the Saudis do.
Looking at the actual events from the US, the impression I get is that some of the people executed for these types of "crimes" are either political or religious dissidents.
In the US, we don't execute political dissidents, we just turn Lois Lerner and the IRS loose on them.
The Saudis execute less than 100 people per year, less than 50 in many years, while the US executes several dozen.
In almost all cases of execution for religious reasons, the accused has a few days to recant and follow Islam. Once one has earned the wrath of Lois and her comrades, there is no chance to recant.