Complex sentence: Indeed, his initial reaction to the news of Terry's death was to angrily punch through a nearby car window, causing Vic Mackey to pause in shock at Lem's anger at the death of his friend.
Split into simpler sentences: Indeed, his initial reaction to the news of Terry's death was to angrily punch a nearby car window. This made Vic to pause in shock at Lem's anger at the death of his friend.