NFL didn't try to stop Eminem from kneeling during halftime show
Here's what happened at Dr. Dre's enormous Super Bowl halftime show - Double J
Super Bowl: Eminem takes a knee, 50 Cent hangs upside down
Dr. Dre talks Eminem taking a knee at Super Bowl
Dr. Dre, Snoop Dogg Headline Halftime Show As Eminem Takes a Knee - The New York Times
50 Cent surprises with 'In Da Club' at Super Bowl halftime - Washington Times
Eminem the only one taking a knee @ the super bowl : r/Eminem
The Super Bowl halftime show was a mixture of respectability and reckoning : NPR
Eminem takes a knee during Super Bowl halftime show performance [VIDEO] - DraftKings Network