Beyonce's spirited younger sister Solange Knowles has come out as a vocal critic of former vice presidential candidate Sarah Palin, after reading that Palin called Michelle Obama a racist.

The controversial Tea Party proponent is currently peddling a new book 'America by Heart: Reflections on Family, Faith and Flag,' in which she claims that President Obama and his wife are "unpatriotic," because they spent "almost two decades in the pews of the Reverend Jeremiah Wright's church listening to his rants against America and white people."

"I'm SICK of Republicans shenanigans," Solange tweeted in response. "Sarah Palin wants to call Michelle a racist? Says that they listened to rants about white people in church & that makes them racist. So did that make her (Sarah Palin) a racist when people at HER rally were yelling out 'That n-----'? By listening to that & not stopping it?"

Solange acknowledged that her political opinions may cost her fans, but, never one to hold her tongue, continued to attack the Republican party. "The sad and scary thing is that these fools are in office," Solange continued. "And just how many Americans will fall for the 'okie doke.'"

Solange is currently at work on her indie rock-influenced third album.

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