1. The poor, the infirm, and the old, are afraid because they remember Hitler's Germany. The wealthy
[and powerful] in Germany blamed those they considered less productive for their nations economic problems: The poor and destitute, the old, the weak or sick, and those who were different. Hitler, acting as a ignorant puppet for the ruling class, swept the nations middle class up in a furor of hatred. The nation then did their best to kill everyone they considered "undesirable."
2. The middle class is also terrified today, because they see their jobs disappearing and their "class" melding into poverty. They are afraid they will soon be among those who are destitute, and considered by many as undesirable.
3. The rich are just as terrified, because they remember that in France a few years ago, a failing economy brought about what we now refer to as the French revolution. At that time, it was the wealthy ruling class who were blamed. As people became aware how the wealthy and powerful had abused their privilege and authority so as to manipulate rule and law, and thus to drain the nations wealth into their own pockets; The lower classes blamed the ruling
[Aristocratic] class for their economic failure. In an attempt to establish a new and better government for France, to establish a government "of the people," the middle class did their best to round up and kill all the wealthy aristocratic ruling class. Their slogan was "eat the rich", sometimes literally! They were no doubt afraid those individuals would infect their "new government" with aristocratic thinking. Every class thus has sound reason to be concerned about the future. Regardless of class however, Jesus said there is no reason for those who have faith in him to live in fear. (
Luke 21:28) If
יהוה did not cut these last days short, none of us would survive. (
Matthew 24:21-22) So do not be in fear,
He is cutting them short.