President Donald Trump on Wednesday ridiculed former Vice President Joe Biden for calling violent left-wing Antifa groups “an idea” during Tuesday’s first presidential debate. “Joe Biden says Antifa is just an idea,” Trump said. “Well, ideas don’t assault cops and they don’t burn down buildings. Antifa is a domestic terrorist organization.” The president commented during a campaign rally in Duluth, Minnesota, on Wednesday night after Tuesday’s debate. He boasted that he had received endorsements from law enforcement organizations all across the country, and Biden did not receive one. Trump also accused corporate media of fueling the riots throughout the summer,...