It gets really hard to tell.

Are these all false flags?
or all these all the same kind of people being given the same kind of thought, doing copy-cat?

But this said, the pile of weirdness, if you actually look past the story that the MSN spins, is wayyyy too much.

The thing about background checks...
if you are not a criminal yet, you should pass them without any problem.
There isn't a database of the school bullies.

There is only a database of people the police have apprehended and those who they ratted out.
Or the no-fly list which is just a record of weird things like, did you read Mein Kampf.

So, background checks are mostly meaningless.