London-based producer, singer-songwriter, multi-instrumentalist and DJ Fred Gibson — known professionally as Fred Again.. — kicked off the U.S. leg of his European tour with a three-day concert set at the Forest Hills Stadium in Queens, N.Y. beginning on Oct. 12.

Used by both millions of lawful citizens and some of America’s worst mass murderers, the AR-15 is arguably the most controversial rifle in United States history.

The FBI released a study this past September of 160 active shooter incidents from 2000 to 2013, 12 of which took place at institutions of higher education.