To save his presidency, Donald Trump may tear America apart

(CNN)To save his presidency, Donald Trump may tear America apart. Trump is not even pretending to hide the divisive racial rhetoric on which he's anchoring his bid for a second term. He's running to keep the Confederate flag — seen by many Americans as a symbol of slavery — flying. He's guarding statues that honor generals who took up arms against the United States. He has attacked a Black NASCAR driver and even slammed the Washington Redskins football team for finally looking for a less offensive name. Without a strong economy to carry him through reelection, Trump is picking the most polarizing fight possible: He hopes enough Americans will agree that their White culture is drowning under...