It was misdirected hatred.
It was venting, a venting of misdirected hatred.
Misdirected hatred is unjust.
Realizing this unjust action, this sin untangles the spirit.

If there is more to it than that, let us know.

Now, we have to hear how the other three people were involved.
This was not a man acting alone. How were three others involved with or without him?