[Confusion]

We have provided people with easy ways to voice their thoughts and we are now confronted with what everyone should already have known: that people have a lot of 'bad' thoughts.

Every teen has at one occasion thought: I feel like killing [everyone in school, my team, my so-called friends, my brother, my ...]. Writing such a thought down gives it extra power and a screen doesn't confront you with a person and make it easy to misjudge whether you can press 'send'.

Monitoring that speech and acting on it, directly by the government or indirectly via 'concerned citizens': that way lies police state insanity.

So the answer is emphatically, decisively: no. You should not want to report this.