A conference held on April 9 on Christian and conservative issues in Sioux Falls, South Dakota was threatened by a Muslim man carrying multiple firearms. He attended the conference and posted numerous videos on his Facebook page, including a display of the multiple assault-style rifles, pistols and ammunition he was carrying on his person and in his van. He has not been arrested. The man, Ehab Jaber, posted numerous Facebook videos of himself both in the event and in his van in the event parking lot. In his van he shows off all his weapons, saying: “And now if you...