I know! LoopTroop did it. The evidence, their song "Jag Sköt Palme".
"Jag sköt Palme och satte Christer i klistret
om snuten bara visste det var Loop Troop terrorister
som sköt statsministern för tolv långa år sen
och hårt sen det var Mattias och Mårten"
(Though, it is based on the track "I Shot Reagan", so it miiiiight be a red herring.)
Promoe was only 10 at the time. No go. :/
Says it was a "conspiracy consisting of Police/Military/Security people".
Someone had to know that OP did not have police protection that night. Also OP was shot with ammunition called "cop killers", aka. ammo that can penetrate bulletproof vests, not something your regular doped up druggie would have.
GW says that CP could not have done it (he is not that kind of person, the assassin behaved very calmly and shot with great accuracy (though he missed LP because she made a dramatic turn to OP, the assassin probably thought he had hit her as she went down on her knees to see what had happened to OP.) but he was in the area when it happened (at an illegal gambling club where he had used meth).
I'm also beginning to suspect the Police, just by how messed up the whole investigation is and that witnesses changed the description of the assassins clothing (to more match what CP was wearing). Perhaps the most damning witness against CP being the assassin is that a witness who just after the shooting saw the assassin run past him said it was NOT CP because the witness knew who CP was (they were living in the same area, and CP was the "village idiot" who everyone avoided, so he was well known to the witness).
</feberyra>