Well, there are actually multiple parts to any serious reply to your "wake-up call":
1) you might not hear/see people from the EU complaining because they might not do it on Slashdot (hint: not everybody speaks English).
2) What can realistically be done against the NSA?I mean, the US interferes almost everywhere, and if someone does not agree, there is a lot of political pressure. Besides, what exactly are Americans doing, other than complaining on Slashdot? (I am really glad for the EFF and a few other such organisations)
3) Please also consider that when Europeans complain, they are labeled as anti-American (or anti-Israel). So people might shut up because it's difficult to have a real argument. But the US might not have as much support outside the US as Americans like to believe.
I would also argue that Europeans (and other countries) really do a lot already. Maybe they don't complain that loudly, they just vote with their wallet (look at what is happening to Cisco or the military airplane deal from Barzil that went to Saab). Or they change laws to mandate having communications that are terminated on both ends in the same country stay in this same country instead of taking the cheapest route (often through London). In fact, I get the impression that Americans complain and European (and others) work hard on overcoming the problems.
If you have any useful ideas on how to tackle the issue efficiently, I (and a great many others, I am sure) would very much like to hear them.