On my travels I often encounter Thalmor Justiciar escorting a prisoner. As a former prisoner, I once tried aiding him by slaying his escort. Sadly, the guards at the next village I encountered saw that as a vile crime.
So now I'm left wondering, why can't I kill these lone escorts, especially when there are no eye witnesses? Or are the Thalmor the good guys and should I let this criminal be taken to the block without inferring like a law-abiding citizen of Skyrim?