"I feel like we should support what we feel is right," said guard Davin Joseph, who had the words on his cleats during the pregame warmup.
Some were among the group that performed a "Hands Up, Don't Shoot!" show of solidarity - and were criticized for their activism - before a home game a week earlier in the wake of a grand jury's decision not to indictment the police officer who shot Michael Brown in Ferguson, Missouri.
The "I Can't Breathe" message references Eric Garner, who died at the hands of a New York police officer in a case that also did not get an indictment from a grand jury.
"Every life in this world is worth something, and when you lose one, it hurts, no matter who it is," Joseph said.
As football players, the Rams are doing a good job separating their protests from the work they're doing between the white lines, taking advantage of a plummeting franchise for the second straight week. They routed the Oakland Raiders 52-0 a week earlier and now stand at 6-7, a decent showing for a season that could have fallen apart after Sam Bradford's knee injury in August.
"1945? We're about to shut out three!" defensive tackle Michael Brockers said. "When's the last time we shut out three?"
That would be never. Brockers will get a chance to back up the guarantee at home against the Arizona Cardinals on Thursday.
The Redskins (3-10) dropped their fifth straight and clinched their fifth double-digit loss season in six years as they head into another December of turmoil that will focus on the futures of coaches and quarterbacks. The offense was booed again in a half-empty stadium.
"I've said rock-bottom once before," Washington linebacker Ryan Kerrigan said. "It downplays what rock-bottom is if you keep saying (it) every time you lose."
McCoy completed 20 of 32 passes for 199 yards with two interceptions. He's been sacked 12 times in two weeks. Gruden said he'll have to learn more about McCoy's neck injury before deciding on a starter for next week.
NOTES: The Rams from the Griffin trade who played were Brockers, Janoris Jenkins, Alec Ogletree, Greg Robinson, Stedman Bailey and Zac Stacy. ... St. Louis K Greg Zuerlein missed an extra point, a 28-yard chip shot and a 38-yard attempt - all wide right - before sneaking one just inside the upright from 34. After the game in the locker room, coach Jeff Fisher turned Zuerlein's day into a light-hearted moment by having holder Johnny Hekker put the ball down and Zuerlein kick it into a locker in front of the team. "Anytime you have a day like this, it's never easy to show your face around everyone," Zuerlein said. "But coach Fisher is awesome."
Copyright 2014 by The Associated Press