Race-(ism?) and American Idol

I love my American Idol, but really, what could I think of this week's results but that there had been some racial shenanigans at work?  The bottom three this week included two African-Americans and the biracial (looking at least) dread-wearing Jason Castro--the three most "ethnic" looking of the bunch.  Seems like American Idol wants to be a kind of 50s-version of All-American-ness--think American Bandstand before the 1960s protests.  Each of the bottom three have more talent than some others who sailed through (yes, I'm talking about a certain someone who sang to bless America).  What are we to make of this, but that the odds are stacked against talented singers of color on the show?  Or is that they just don't capture the imagination of the 10 and 11-year-old white girls who vote early and often?  Yes, there was the favorite David Archuletta and the cute but not very interesting Ramiele there safe on the couch, but still--oh, American Idol, don't make me turn off the tv in protest!