Clearly to some Americans, it makes a difference.
Hillary's response is to give a generic statement about the importance of talking together instead of shouting. Except that the only way anyone can reach her to demand the truth is by shouting.
She has avoided addressing the parents of her victims in Benghazi. She did her best to avoid testifying in Congress about it. And when she did, she demanded to know, "What difference it made."
Clearly to some Americans, her role in letting four Americans die in Benghazi makes a difference.