He popularized the `` devil 's horn '' gesture , where the index and the little fingers are upright and the thumb is clasped against the two middle fingers . Church says it will picket singer Madonna 's memorial service . Public service will be donation center to raise money for cancer research . Rocker died on May 31 after battle with stomach cancer . Dio , Rainbow and Black Sabbath .
Church says it will picket singer Madonna 's memorial service . Public service will be donation center to raise money for cancer research . Rocker died on May 31 after battle with stomach cancer . Dio , Rainbow and Black Sabbath .