It's hard to say what motivated the shooter. There is even speculation he planned to attack the "official party" itself which was well-run on a heavily traveled street and finished at the early hour (for me anyway :) of 4 am. When they say, "the freaks come out," Seattle knows how to do that and be cool with it.
The Seattle scene has always been an ever-changing melange and people cross readily between music genres because they are *friends*, you know. The boundaries are much less than they are in other parts of the country, from what I have observed, and there is a lot of crossover between electronic and regular band scenes as the interests of those already identified as victims indicates. And there is less of the segregation by age groups that has occurred in other places, certainly in Portland where I am. The people in that house were in the late teens to late 20s. This was utter violence visited on a scene that works hard to keep that out, where people actually say "PLUR" and mean it. Our friend groovinkim, who founded nwtekno, lives a few blocks away and says the neighborhood is semi-sketchy. This is all about a multi-ethnic youth culture trying to find a safe space to function in an increasingly unbalanced society. You can chuckle at the "candy" aspect of some of it but these are, through only a couple degrees of separation, our brothers and sisters in electronic dance music of *whatever* kind. fh