Answer:
I am edible pink and a great summer food
When you take away the whole from me there is always some left.
Everyone asks for me but yet everyone hates to face me. For someone I am agony for others I am relief. Who am I?
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
If I drink, I die. If I eat, I am fine. What am I?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.