Because Rih isn't american she can't use an American flag ?!
She wore a american flag jacket on the We Found Love video and she sung for the american veterans just lately, she's definitely trying to appeal to americans more than ever

And with Home coming, the commercial strategy is in the loop more than ever to appeal to the patriotic american family ...
I will not cross Rihanna off yet.
But yeah Kanye used a big fat ass flag in the Otis video ... sounds like him.