John Kass The “We the People”-themed Democratic National Convention, like the Republican one to follow, shows us what America has known for years: that conventions are only infomercials designed to bend reality to political will. The Democrats bend their reality toward a referendum on President Donald Trump’s handling of the coronavirus, but they bend it away from any mention of growing violence in American big cities run by liberal Democratic administrations. As I keep telling you, when you hear politicians talking, pay attention to what isn’t said. Train your eye…