But on the other side of the coin very real bullying can come from just words.
Unfortunately what is real bullying and just harmless talk exists actually exists on a gradient so we can't really codify it into anything that seems reasonable. Most good judgements are arrived at by just intuition.
Investigations should start with the crime and work backwards to find the criminal. If you have to find incriminating statements to tell if a crime has even happened, that is really a different thing.
That's what it sounds like:
>Alphabet Inc.’s Google is on trial in Washington DC over US allegations that it illegally maintained a monopoly in the online search business.
They aren't 100% sure so they are finding statements and actions to prove that Google is engaging in anti-competitive behavior.