Explanation: While history is vast and multifaceted, horrors abound. In the US, undoubtedly, there has been land theft, slavery, and genocide in our history, and in no small amount. However, while 'Vietnamese farmers' is memeing it up a bit, we certainly did not win the Vietnam War, despite our brutal conduct therein.
You don't hear much about color symbolism in the US flag. Guess it just looked nice.