We (christians) of all other people should be the kindest to others. We should be complimenters not criticizers. We have Christ within us. We can win someone over a whole lot easier with kind words rather than a sharp tongue.
We should humble ourselves. James 4 v.10 says "Humble yourselves in the sight of the Lord, and he shall lift you up."
I am going to work on myself. I need to compliment people more. Stop the criticizing and critiquing. Stop the fault finding and LOVE people WHERE they are HOW they are!!!