again i don't think christians were necessarily more reluctant to murder their rulers than anybody else. i suspect you may have some inflated expectations how fanatical people were in their beliefs exactly. they were already chuds. the peasants, anyway. of course there was also schizos, monks even, and hermits, and flagellants, and people passing themselves through the fire of moloch, but plenty of people didn't exactly care in detail (and also couldn't read) beyond nodding to whatever the priest said, as was expected of them.
Germany