Those boys were all three striped naked for a reason. I also believe the boys were raped in more ways than one.
rsbm
Now, I know we are coming at this issue from two very different viewpoints.. but, if we can put aside suspects for a moment, and have a look at what the evidence actually is to support this idea...
One of the boys had abrasions close to his anus, which are describes as 'fine scratches'.
A similar description is given to the abrasions on the penis of another victim.
This is a bit of a red flag to me that -maybe- some kind of sexual assault was going on. Not anal rape, but sexual assault of some other kind.
Another flag is the way the boys were tied. IMO, and having observed a few multiple homicides involving binding, it is -extremely- unusual for all the victims to be tied in a way as to look very similar to one another (accounting for the fact that not all the boys' binding were precisely alike, but near enough in visual and physical effect). In fact, I cannot off the top of my head recall -one- in which the bindings were this similar. It speaks to a desire for a certain appearance, rather than sheer necessity, I think.
And the -way- they were tied is such that their buttocks were exposed. There's a bajillion ways to tie somebody up. In this sort of case, I ask myself, 'WHY that particular way?' because it can say a lot about the perp's intentions. The way the boys were bound is overtly humiliating, and that could be one reason..
Anyway. Probably a little OT for this specific thread, but worth mentioning IMO. Plus, it's nice we can agree on some things.