If I were to be able to transport myself back in time to the 1930s, knowing what I know, it wouldn't be hard for me to see fascism as theist imminent threat with communism coming in second by a nose.
Now, after much soul searching and trying to find the right words, I think that compassionate narcissism is the most dangerous idea and behavior in the Western World.
It's more dangerous than modern fascism because, modern fascists aren't all that manipulative because they aren't particularly smart. They're the bullies that will tell you in no uncertain terms that they'll punch you in the gut if you don't toe their line and accept their bullying.
The compassionate narcissist thrives on manipulation. They spend they're lives convincing people that they're punching you in your gut for your own good, or the good of the marginalized. It's fascism plus gaslighting.