How much protein do you really need?

What is protein?
How much protein do you need?
What foods are high in protein?
What is the importance of the protein macronutrient?

Raw Vegan Protein Shakes: 
Sunwarrior Classic (rice protein) {my favorite}
Sunwarrior Warrior Blend (multiple ingredients)
Garden of Life (includes greens)

Research Notes:
https://www.onegreenplanet.org/vegan-food/vegan-sources-of-protein/
https://www.peta.org/living/food/complete-proteins-vegan/
Sutton, B. G. (2022). NASM essentials of personal fitness training. Burlington, MA: Jones & Bartlett Learning.