Victim blaming is blaming the victim for a crime they didn't commit. Victim blaming is being blamed for somebody else's actions.
Think of victim blaming as when someone's raped, they (police, judge, counselor, whoever) always ask the victim what they were wearing, how they were wearing it, etc.
An era where everyone blames each other over the past rather than moving forward with life. This time period can span for years and years without resolution or common ground.