When President Obama spoke Thursday on the resignation of Attorney General Eric Holder, he began his formal remarks by quoting Bobby Kennedy, “on this generation of Americans falls the full burden of proving to the world that we really mean it when we say all men are created free and equal before the law.”The president segued from RFK to Holder thusly, “As one of the longest-serving attorney generals in American history, Eric Holder has borne that burden.” At first blush, the Kennedy-Holder connection might seem like a stretch. For starters, Bobby Kennedy was a novice Attorney General compared to the seasoned Eric Holder.