Attending an RMS talk at a university ~8 years ago, some (increasingly irritated) lecturers questioned him on the use of proprietary graphics drivers in image processing for use in medical equipment and research. While RMS argued his absolute stance that proprietary drivers are never permissible, the lecturers argued that the drivers were literally saving lives and people would die without them.
"They should die for the cause."
Harm isn't very present on the FSF priority list.