A British Teacher who was Stabbed to Death in Front of Her Pupils was due to Retire later this Year

From BBC News-Ann Maguire, 61, died from multiple stab wounds suffered in the attack at Corpus Christi Catholic College in Leeds on Monday.
Head teacher Steve Mort said Mrs. Maguire had been the "mother of the school" and "the calm in the storm" for 40 years. Other quotes by news agencies: "She'd touched the hearts of three generations of pupils. She was an inspiration, not only to the pupils but to the staff of the school."
A 15-year-old boy remains in custody at a police station in the city.
End BBC report
Guns are banned in the UK, so the means of attack there are mainly knives. There is no report of antidepressants or psychotropic drugs currently, but the pattern is the same as commonly occurs in the US. According to news reports the teacher Ann Maguire was very well liked by students and staff at the school.
So what triggers a 15 year old boy to take knife and stab his teacher? Where does all the rage and courage come from to do such a thing? The media will likely say it was a video game or some nonsense. The pattern is evident that antidepressants and psychotropic drugs produce this type of rage and mania (its part of the side effects) to do this.
Its not the gun, video game, bullying, which a dumb government or media likes to blame. It’s the drugs!!! Pure and simple.