I started off spawn killing because I can't think of another server where there's any sort of rule against it. People complain about it, sure, but there aren't any other servers with the rule. As far as I'm concerned, it's part of the map. There's a whole building at the spawn that is part of the playable map.
After I was warned I stopped unless someone else was trying to spawn kill. I only saw it fit to kill the people shooting from spawn.
That was my mistake and I cleared it up in my original post. It looked like you were firing, so that's why I shot. As for those other kills at the end of the demo, he drew first blood.