 Crowds marked the beginning of the third millennium with a large ceremony on the quadrangle and the "largest single vigil" ever seen in the nation's capital took place in 2001, when on September 14, 2001, 100,000 people gathered on the main lawn to honour the victims of the September 11 attacks on the United States that year.The following year, Queen Elizabeth II's Golden Jubilee was marked on October 13, as was her Diamond Jubilee on February 6 (Accession Day) 2012.On October 22, 2014, several shooting incidents occurred around Parliament Hill.