The survey finds that Americans are primarily bound together by their generation and the major events that occurred during their formative years. For the oldest Americans, the Silent and Greatest generations, that unifying event is World War II. For Baby Boomers, the assassination of John F. Kennedy and the Vietnam War are defining moments. For Millennials and Gen Xers, the 9/11 terror attacks and the Obama election leads the list by a greater margin than for other generations.
