Oprah Winfrey decided to cancel today’s episode of her talk show called “10 Years Later: The Truth about Columbine,” due to the focus being too much on the killers of the high school massacre.

Today marks the 10 year anniversary of the Columbine tragedy, where 12 students and a teacher were killed during a massacre in Littleton, Colorado.

Oprah Winfrey decided to pull the episode, saying that once she reviewed the taped show it appeared that too much of the focus was on the killers.