From WaPo:

When sports fans tuned into the NBA finals Tuesday night to see the San Antonio Spurs take on the Miami Heat, they got a look into another fierce standoff.

A California tribe paid for the anti-Redskins advertisement “Proud to Be” to run in seven major cities during halftime. The airing marked the first time the ad, which initially appeared online in time for the Super Bowl, had run before such a wide television audience.