A Florida man who represented himself in court and usually shouted his arguments at jurors was found guilty on Monday of killing his girlfriend and daughter and guilty of trying to kill his son. Ronnie Oneal III, 32, had notably given a rambling opening statement and closing argument in which he denied wrongdoing in the 2018 murders of Kenyatta Barron, 33, and Ron’Niveya Oneal, 9, but admitted to certain elements of the state’s case.