In January 2014, the American singer and actress Queen Latifah was sworn in as a commissioner in the US state of California (valid for only a short period of time) that essentially give her the license to officially preside over marriages. About thirty-odd couples were married by her; the event was accompanied by a performance of the song "Same Love" by the hip-hop singers Macklemore and Ryan Lewis.
What larger event was the backdrop to this event?
[+ Show Answer]
The 56th Grammy Awards, held in January 2014.
More here.