Either way, it's an absolutely awful turn of events, and the kind of horrible thing that I thought would never happen again after the attacks in the early 00s.
But your right, recognizing it's a feedback loop is the first step.
Keep trusting, keep being fair to everyone.
That means not allowing people to break the rules of society due to their personal beliefs but enforcing laws above board. No "shadowbanning" (unlawful arrests) or unlawful surveillance.
The latter has nothing essential to do with the NM/TX border, there are border patrol checkpoints (including mobile ones) in a pretty wide swath "near" the Mexican border. They don't exist to enforce any kind of control on state borders.
Do any of the refugees blame Europe for their [Europe's] involvement? Probably some do, yes.
www.spiegel.de/international/the-future-of-terrorism-what-al-qaida-really-wants-a-369448.html