Eggs are traditionally an economical staple food for dense nutrition which the working poor rely on, and eggs are also used in a LOT of baking recipes which plays into wheat flour being their economical staple for pure energy purposes. This is a test for a reaction from the working poor. Much of what they do is a 'testing of the water' with different demographics to see what can cause widespread backlash vs what different people have become hopelessly apathetic about. They need to know these things in order to engineer controlled chaos. I can almost guarantee that a group of black cops filming themselves sadistically murdering an innocent black man is also a controlled test to see how different demographics react, especially as far as testing which group triggers the masses more: cops or white people.