Answer:
I am black within and red without; with four corners round about. What am I?
Marking mortal privation when firmly in place. An enduring summation inscribed in my face.
Kings and queens may cling to power and the jester's got his call. But as you may discover the common one outranks them all. What am I?
I've been argued on my color. Without me you'll die. So many attempts on your life use me so make sure you have many of my White friends.
I can be short and sometimes hot. When displayed I'm never cold. What am I?
Often cooked as fillet, this meat comes from an animal that swims underwater.