AdvertisementSKIP ADVERTISEMENTOn the eve of July 4, President Trump extolled the nation’s founders while branding his opponents as “communists” in what seemed to be a warm-up for November.He was not subtle. Communism, he said, “is the enemy of July 4, 1776.” He called it a bigger threat than Pearl Harbor and even 9/11. He name-checked Karl Marx.The speech began on an upbeat note. The president painted a proud and optimistic portrait of the...