Owner Dan Snyder said Monday he's creating a foundation to assist American Indian tribes, even as some in that community continue to assert that the name "Redskins" is offensive.

"It's not enough to celebrate the values and heritage of Native Americans," Snyder said in a letter to the team's fans. "We must do more."

A major opponent of the nickname said Snyder's move was "somewhere between a PR assault and bribery." Suzan Shown Harjo, a lead figure in a long-running case that seeks to strip the Redskins of their federal trademark protection, told The Associated Press that Snyder is showing the "same arrogance" that he's shown previously when defending the nickname.

"I'm glad that he's had a realization that Native Americans have it tough in the United States," Harjo said. "All sorts of people could have told him that, and have been trying to tell him that for a long time."

Snyder again gave no indication he plans to change the team's name. He said he believes "even more firmly" the name "captures the best of who we are and who we can be, by staying true to our history and honoring the deep and enduring values our name represents."