When one looks at reality with a sense of partiality, one cannot see the truth of the situation.
A correct perspective therefore requires a conscious awareness of good and evil, cruelty and justice, hatred and compassion.
For this consciousness, the measure of not being willing to do to others what you would not want done to yourself is a good guide.
The idea that the snake that does not touch me should live a thousand years is not human.
In this context, reacting against evil and advocating love and compassion to keep goodness alive are both conscientious and human values.