BOSTON (AP) - A spokeswoman for Republican U.S. Sen. Scott Brown says he regrets members of his staff were seen shouting war whoops and performing tomahawk chops and that they have been given their "first and only warning" against such conduct.
The comments came after a second video surfaced showing Brown speaking to supporters while war whoops can be heard in the background.
The whoops escalate as Brown criticizes Democrat Elizabeth Warren's claims of Native American heritage.
Brown doesn't react in the brief clip, posted by the Democrat-leaning Blue Mass Group.
On Tuesday the group posted another video showing staff members for Brown and the state Republican Party shouting war whoops and making tomahawk chopping motions with their arms.
Two Native American organizations have called the behavior "racist" and "disturbing."
Warren has been unable to document her heritage.