The reports trickling out about the Greene who was arrested provide just enough fodder for people to imagine they understand the motives for the crime. A big Trump campaign sign was in the yard of his mother’s house, where he lived. He had a record of confrontations with police and people of color. Police were investigating a video posted a month ago documenting police ejecting a man from an Urbandale High School football game for causing a disturbance while waving a Confederate flag