Hookups. Bacchanalian nights. Fights. You can expect all that on The Real World: DC (premieres Wednesday, 10/9c), but the 23rd season of the MTV series will also mark a shift in tone as the eight twentysomethings get socially involved, interning at various political establishments around the city. “I think it will be a pleasant surprise to see that not only can you go out and take shots, get to know people and have fun,” cast member Mike Manning tells TVGuide.com, “but at the same, you can wake up the next morning and meet with a congressman about global warming or about equal rights or marriage equality. See what else the 22-year-old, who worked with the Human Rights …