User blog comment:Gifist8/Why The Return Of Olicity Could Work (If Written Right)/@comment-31390111-20170501155212/@comment-27700324-20170501173432

She killed those people because she wanted to. She even said that she enjoyed it once. She calls people victims too! What more evidence do you need? This is clearly a serial killer.

Oliver killed Damien because Laurel died. He killed out of an understandable vengeance and something tells me you would do the same if you were in Oliver's position considering you are still on the side of wanting Laurel back in some way. So stop trying to fool yourself into thinking there is another way.