In June of 2016, an American born man, who had pledged his allegiance to ISIS, went into a gay nightclub in Orlando, Florida and gunned down 49 people while wounding 53. Omar Mateen was his name, and to his friends and family he never seemed capable of doing such a terrible thing. His wife told reporters she thought he was mentally ill, and his parents claimed he never acted strangely or even had any religious affairs. This was a complete act of hate and crime and an enormous point of pain for so many families, and the entire LGBT community as a whole. 

https://www.cnn.com/2016/06/12/us/orlando-nightclub-shooting/index.html