Thomas L. Friedman: :Our democracy is in terrible danger

President Donald Trump has now made it unmistakably clear in recent weeks — and even more crystal clear at Wednesday night’s debate — that there are only two choices before voters Nov. 3 — and electing Joe Biden is not one of them.The president has told us in innumerable ways that either he will be reelected or he will delegitimize the vote by claiming that all mail-in ballots — a time-honored tradition that has ushered Republicans and Democrats into office and has