Exaggeration, misinformation and myth have always infected politics – even before social media took it to the extreme.

NEW YORK Jean Kennedy Smith, the last surviving sibling of President John F. Kennedy and a former ambassador to Ireland, died Wednesday, her nephew confirmed. Smith died at her home in Manhattan, her daughter Kym told The New York Times. Sen. Edward Kennedy, the youngest of the Kennedy siblings, died of brain cancer in August 2009, the same month their sister Eunice Kennedy Shriver died. Smith, who married Kennedy family financial adviser and future White House chief of staff Stephen Edward Smith in 1956, was viewed for much of her life as a quiet sister who shunned the spotlight. Her son, Dr. William Kennedy Smith, made headlines in 1991, when he was charged with rape at the Kennedy estate in Palm Beach, Florida.