In a press conference Friday morning, Karen McDonald gave a horrific detailed account of Ethan Crumbley's actions and state of mind starting from when the gun was purchased on Black Friday until after the tragic Oxford High School shooting to explain why she places responsibility on Ethan Crumbley's parents.

"I want to be clear that these charges are intended to hold the individuals who contributed to this tragedy accountable and also send the message, that gun owners have a responsibility," McDonald emphasized.

Days before the shooting, Jennifer Crumbley was ecstatic that her son was testing out his new Christmas present, a new Sig Sauer semiautomatic pistol.

A teacher saw Ethan searching online for ammo while he was in class and reported him to officials.

The school contacted Jennifer twice about this dangerous activity but the parents never responded back to the school.

Prosecutors found text messages with Jennifer and her son after this incident where she said, "LOL . I'm not mad at you. You have to learn not to get caught."

This is insane.

On the day of the shooting a teacher took a picture of a note Ethan wrote saying, "these thoughts won't stop, help me" accompanied by a drawing of a bullet with "blood everywhere."

(Watch the video above, because Ethan was waving giant red flags to his parents that he was going to go on a spree kill. And they did nothing.)

What's at least as shocking as the shooting itself is the fact that James and Jennifer Crumbley were summoned to school and had a face-to-face conference with school counselor as well as with their son Ethan hours before the shooting took place. They were told they needed to get their son to therapy within 48 hours.

At this time, their son had the gun in his backpack, but the parents didn't bother to ask if he was armed or even check out said backpack.

The parents then refused to take their son out of class.

"James and Jennifer left the high school without their son. He was returned to the classroom," prosecutor Karen McDonald recounted.

Jennifer Crumbley texted her son: "Ethan, don't do it," but by then he had already started shooting. It was too late.

This is a shooting that should and could have been prevented. But when you have parents that were either so clueless of or complicit with their son's actions, children die.

It doesn't come as a shock that the Crumbleys were big gun nuts and Trump supporters, who made their feelings known about him on social media.

I've never heard of parents behaving this way towards their 15-year-old son, who was clearly going to carry out a massacre, yet they did nothing about it. The charges against them are well-earned.