Spot on analysis I think.
It is also an explanation for the terrorist acts of Daesh. They are extremely annoyed that many displaced Muslims would rather relocate to Europe rather than their appalling regime.
They think that by commiting terrorist acts in Europe they can make people believe that all Muslims have terrorist sympathies by leveraging our corrupt media who at the very least believe that selling more page views is their only job.
It is straightforward for Westerners to comprehend the behaviour of Daesh and to believe that defeating their military occupation of Iraq and Syria makes sense. Extending that believe to attacking our fellow Muslim citizens and refugees is unpatriotic because it is exactly what Daesh wants to reinforce the scenario you paint.
Engineers are perhaps more susceptible to the calls of propaganda for all the reasons that you cite. As a profession we should also recognise that our education might have been light on philosophy and psychology which would armour us against propaganda and manipulation.
As a society we recognise that there is an argument that some arguably disenfranchised groups should benefit from positive discrimination - Women, people of colour, disabled people. It is arguably an even stronger imperative to be inclusive towards people of a different culture who are being attacked by an extremist terroist movement who want us to turn against them so that they are easy recruitment fodder. I suggest that it would be good systems engineering to remember this when the usual supects press the emotion button and call for repression and exclusion.