That's a pretty... strange example? 10% is fairly large odds that you'll be in the next batch, certainly high enough to cause worry. I would quite rationally shy away from any activity that gave me a 10% chance of death doing it.

The idea that 35+% of people are worried that they'll be the victim of terrorism is something that we should be worried about (heh). It suggests that people's risk assessment is completely unrelated to reality. I am as close to 0% worried as I could be that I'll be a victim of terrorism. Thinking otherwise is laughable. There are plenty of actually real things to be worried about...