I'd lay off. You seem to be walking onto "no, the 9/11 hijackers must have been cowards, and if you suggest that maybe cowardice wasn't high on the list of their faults, you're a monster" ground. Being correct within the limited context of what's at question isn't important to a lot of people, in these kinds of conversations. They find it hard to divorce that from the rest of what happened.
The point you made seems to be remarkably overlapping with that it is ok to shoot children that are members of some political party, which I hope was not what you intended.
You're 'obviously not defending the guy' with words that are pretty close to if not already across that border. When you step into the breach for some monster weigh your words a bit more carefully please.
How can you construe anything I said as defending anything? I was super careful not to do so, my point wasn't even about this particular shooting at all. At some point, when writing or saying anything, you have to rely on the person reading or hearing you to have some baseline of capacity or willingness to understand, which in this case I can only assume you do not have, if you insist (or even imply) that I am somehow "defending" this shooting (or any ideology that led up to it). In fact, it seems that your reaction is exactly what I warn against in the actual point I was trying to make.