What can one say about Montebello High School? While rallying against tougher immigration laws, student protesters lowered the American flag, raised the Mexican flag, then flew the Stars and Stripes upside down beneath it. A protest can be chaotic and unpredictable. These students rushed out of class, their adrenaline pumping. Emotions ran high -- some were rallying against laws that directly affect their mothers and fathers. Even so, why did they use their protest to make a statement about America versus Mexico? Among Mexicans championing immigrant rights, why is there a faction that insists on denigrating the United States? Why...