Definition: Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].
Input: We know that  Nikolas Cruz  wasn't hiding a thing about  his  killing rage in the months and even years before the Florida school massacre.
According to the best British newspaper in America  the Daily Mail   Nikolas Cruz  abused his ex and sold knives out of a lunchbox.  He  was disciplined by the school 25 times and finally expelled.
Good Morning America could not pass up an interview with survivor Ariana Lopez. In her circle  everybody knew that  Cruz  was dangerous.  He  didn't bother to hide it. According to  Ms. Lopez  Cruz  was signaling  his  rage and murderous feelings like mad.
Lopez made it clear during her interview that  Cruz 's problematic behavior and mental health issues were on clear display at school. 'He used to sell knives out of his lunch box  which I thought was insane. You can't have knives  this is a school'  said Lopez of  Cruz . 'He would be like  "hey guys  want some knives?"' One of the incidents that led to his being disciplined was a fight in September 2016. Footage of the brawl emerged over the weekend.  Cruz  was suspended for two days as a result of the fight  which was over a former girlfriend.
This changes the picture completely: what the hell were the school counselors and police authorities doing while  Cruz  was signaling murderous intentions? There is an air of looming tragedy over the Florida school killings  and secretly  many people knew or suspected what was to come.
Any competent teacher  administrator  school cop  or counselor should have seen the signs and should have diverted  Cruz  into a protected environment where  he  could be educated and monitored. If  his  friend Ariana knew he was selling knives  so did dozens of other kids  teachers  administrators  and all the rest. No person in authority acted responsibly. They just kicked the can down the road.
There is no mystery about the Nikolas Cruzes of the world. They have been around forever. It's just that they were spotted and taken care of with discipline and  yes  with love and acceptance  whether they deserved it or not. If they acted out  they were punished appropriately  and if they looked dangerous  they were diverted to activities where they could do no harm.
That's what fathering is all about  and that is what the ancient phrase "in loco parentis" means.  Cruz  should have been effectively disciplined from childhood onward  but  he  was allowed to grow into a raging menace  recognized by other students and by numerous adults.

Cruz told everybody: 'I'm a killer!'