Season 1 revolves around the brutal rape of a woman - graphic references to the rape are mentioned throughout the episodes.
A woman is seen being taken to hospital. She is wrapped in bloody sheets, her face is also bloodied. This same woman is later seen with some bruising and injury detail to her face in several episodes afterwards.
There are several verbal descriptions of injuries sustained as a result of sexual violence.
Season 2 - people are killed, we see this primarily through CCTV footage and isn't too graphic. But we do see the aftermath including bloody injury detail, which is graphic.