“When someone shows you who they are,” Maya Angelou said, “believe them the first time.” We’re about to be reminded who and what the corporate-owned Democratic Party is—something they showed us in 2009. A pair of upset victories in the widely-watched pair of Georgia senatorial runoff elections has handed Democrats what they said they needed to get big things done: control of the White House, the House of Representatives and the U.S. Senate. If they want, they have argued over the last year, Democrats will be able to push through a lot of important legislation on the liberal agenda: a...