Rep. Nancy Mace (R-SC) was bludgeoned on social media Monday after she insulted President Joe Biden’s appearance at a South Carolina church where worshippers were massacred by a white supremacist nearly nine years earlier. Mace posted to X at 11 a.m. ET hervideo response to Biden’s address from the Emanuel African Methodist Episcopal Church — before the 12:30 event had even begun. “He’s literally using the pulpit of a church where a tragedy took place in order to further divide our nation on race, on gender and on politics,” Mace said. “We’re not going to allow a president to come in here and …