And in this case Islamic/Afgan communities may have driven this person to such insane actions. The more the story unfolds the more a picture is being painted.
It seems this man was struggling with demons inside. However, he was too weak to confront then and instead succumbed to them.
It appears that he was gay, however, being gay in Islam is taboo. He may not have been a deeply religious person by definition but it seems as though he was still struggling with religion and self-doubt and his community as a whole. This all seemed to have driven him to insanity.
The family had to have known this person was gay, however, the first thing the dad did was come out and implied that his son hated gays (so he could not be gay). In so doing he is attempting to bury that truth with his son, hopefully forgotten forever.
He wife of four months said he was mental. Of course he was mental because of Islamic societal pressure which he felt forced him into a situation that we was against. He was struggling to deal with the skeletons in his closet.
He had gay friends, frequented that gay club and used gay apps but never had the courage to come out. He was battling with demons for a long time it seems.
To not live with that shame and the pressure not to shame his family possibly led him to go out in a blaze of glory freeing himself and family of the perceived demons and not bring shame on them. The fact that he may have referred to a specific organization may be nothing but fake machismo.
Of all the different sects and religions it seems as though Islam is the least forgiving when it comes to LGBTQ. This must change.
This whole situation was a tragic example of the Intolerance of a religion.
NOTE: the story is still unfolding and may change as we move forward but this is how I interpret it as of now.