America’s political temperature began rising Monday, stoked by the campaign of the candidate who called for political calm. On Sunday night, President Joe Biden intoned about “the need for us to lower the temperature in our politics. Addressing the nation, he said, “While we may disagree, we are not enemies.” Biden continued, “The political rhetoric in this country has gotten very heated. It’s time to cool it down. And we all have a responsibility to do that.” Then came Monday and the announcement that Republican Sen. J.D. Vance of Ohio would be Trump’s running mate “Protest Democracy,” a Bide…