"Dangerism is a term which refers to the practice of maximising the perception of risk and the cultivation of fear and the accommodation of those fears by a "hardening" of safety measures, which then, in turn feed back into a greater yet perception of risk in an increasingly strident feedback howl, until an activity comes to be regarded (however irrationally) as being almost unthinkably dangerous." Aberdeen Cars
Dave J. uses the term appropriately in an interview with Keira-Anne at kiera-anne.com: "I think there is always the tendency to fall prey to unwarranted “dangerism” and hold the view that a skate park is an extremely risky place, but the statistics are pretty clear that other sports such as basketball and soccer have a much higher level of injury than skateboarding."
I think the formal definition for "dangerism" could be something like: "belief systems or ideologies that allow a culture or individual to selectively choose which activities are considered dangerous, often without regard to measurable risk."
"So, I propose the term “dangerism” to describe how a culture decides what is and isn’t dangerous. The sources of dangerism can be traced to both personal and social sources. Our individual perception of risk is based on a combination of personal experiences and family history. The cultural aspects of dangerism are probably best described by anthropologists, but the popular news media certainly plays a part in creating exaggerated portrayals of risk." —Gever Tulley, Dangerism