On alarmism

The global warming people are called alarmists. Once, when it was in vogue, just three decades or so ago, the global cooling people were called alarmists. People who speak of apocalypse are called alarmists. People who warn of imminent nuclear warfare or the ozone layer getting screwed or biological warfare ravaging continents or super-resistant bacteria destroying mankind or mosquitoes with battleaxes taking over the White House are called alarmists.

I don’t know whether all the people above are alarmists or not, but I think of the world around me staying as it is, and I feel alarmed. What’s that about?