Twitter has blocked Republican Rep. Marsha Blackburn's (Tenn.) Senate campaign announcement ad, ruling that a pro-life statement was "inflammatory." At one point in the video, Blackburn, who announced last week that she is running for the Senate in Tennessee, heralded how she "stopped the sale of baby body parts," a reference to her investigation into Planned Parenthood's reported practice of "donating" body parts in return for monetary compensation. But a Twitter representative told the Blackburn campaign that Twitter blocked the ad from being promoted, calling it "an inflammatory statement that is likely to evoke a strong negative reaction," the Associated...