I've been thinking about the word ideology. It has strayed so far from its original definition. In its current form, it's almost never used positively. Yet as an accusation, it is also a confession.
One key way that we can use to identify whether a movement's ideology has become dangerous is to watch who it villainises.
So many realms in our world seem to exist only to mobilise an "us" to attack a "them."
Idealism is a necessity for humanity. Yet there are many ways that idealism turns toxic.