God sees that the human race is inclined towards sin. He searches every heart, looking for anyone who is willing to receive His mercy, to receive Him.
Then he finds Noah.
He determines to destroy the human race completely because they all have turned away from Him. But He saves Noah, because He has examined every heart and found but one man who walks with faith.
The story of Noah, isn’t the only occasion where God’s grace is demonstrated by the abandonment of the convenient broad brush of judgement. Does He not also save Lot from Sodom’s destruction? Does He not pass over the Israelite first born because of the faithful obedience of the parents? Does He not look upon Jesus crucified between two sinners?
Just as God avoids the broad brush of judgement, may we too seek to be merciful. To look for the best in each person (1 Cor 13:7 AMP). Do we assume all the people who hold different opinions to us, be they political, cultural, ethical, theological, are evil? Or do we see past the stereotype, and consider the individual heart.
It is generous of God to weigh us as individuals, may I extend that generosity to others. And not just to individuals within groups, but to the person in the individual circumstance.
Broad brushes are imprecise and harmful to fine art, and we humans are indeed fine art.