S Todd,

Tyranny definition: "cruel, unreasonable, or arbitrary use of power or control."

The hysteria of which you speak, is what has driven the radical right to respond so irrationally and so out of proportion against a group (Muslims) which makes up some 15-20% of Earth's population.  More Americans are killed by refrigerators than so-called Islamic terrorists, but you don't see Trump and the radical right banning refrigerators. The reason much of the world is so concerned about these developments is that the lunatic is now running the asylum.  A man with no sense of caution, proportion, justice, calculation, or justice.  

Moreover, given the economic and military capabilities the US has at its disposal, this is very much our and the rest of the worlds business, as much so as one must be concerned with Kim Jong Un having nuclear weapons and missile capabilities.  It is a crisis because we now live in an age where reason and truth no longer guide US actions and cannot be trusted.