Even though it's probably the ETA and not Al Quaeda, those people are still just as dead.
I've been worried for quite some time that terrorists would figure out how easy it is to hit soft targets in the West, and mass transit is actually more secure than many other places. Shopping malls, movie theaters, high school basketball games, office buildings, and crowded restaurants would all be good places to kill hundreds of people with one well-placed bomb.
Robert Kaplan has written about the way people react to ever-present danger in places like Lebanon and Israel. They basically have two choices:
1) Bunker down, keep out of public, and essentially close off most of life to avoid danger
2) Go on as if they weren't in any danger, even in the face of constant evidence to the contrary
Oddly, it's the people in #1 who end up the worse off, because every single one of them suffers the effects of terrorism. Every single one of them lives a shrinking, constricted life of limited opportunities, and making our day-to-day lives intolerable is one of the chief goals of terrorism.
Some of the people in #2 will end up being vicitms of terrorism, random street crime, or whatever else we worry about as we sit behind locked doors. Most victims will actually come from that group, as they're the ones in harm's way most often. But the vast majority of people who carry on with their lives won't become victims. That's what we need to keep in mind.
We can either take a small, calculated risk of becoming a victim; or we can guarantee that our lives are harmed. It's up to us.