“To understand Newt Gingrich, you have to envision a mixture of “Kill Bill” and “Carrie,” after Sissy Spacek gets hit with the bucket of blood. His only mission in life is getting even with Mitt Romney and the rich minions who paid for all those anti-Newt ads in Iowa. He is exactly like Sweeney Todd mixed with Charles Bronson in “Death Wish.” And maybe a smidge of “Shogun Assassin.”