Commentary for Yoma 164:5

Murderer himself, from where do we derive this? – Let him be killed and not transgress.

Master of the Village – Government of the village that I live there

What do you see (why do you think) that your blood is redder? – In other words, why do you think this thing is permitted? Because of "and live by them" and do not die by them. The reason for the matter is that the lives of the Jewish people are more beloved to God than the mitzvot. HaKodesh Barechu said, "Cancel the mitzvah and let him live." But now there is a Jew killed and the mitzvah is cancelled. Why is it better in the eyes of God to transgress the commandment? Why is your blood more precious to God than the blood of your fellow Jew?