Answer:
I'm sometimes white and always wrong. I can break a heart and hurt the strong. I can build love or tear it down. I can make a smile or bring a frown.
Look into my face and I'm everybody. Scratch my back and I'm nobody.
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
What wears a coat in the winter and pants in the summer?
I go around in circles, but always straight ahead. Never complain, no matter where I am led.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?