What "underpins it" in a lot of cases is entitlement, selfishness and straight up racism/belief in white supremacy.
One can not change someone's entitled or supremacist beliefs by empathising with them. All that does is validate them so they cling more strongly to the belief.
The way to deal with it is to stick to facts and logic, try to get them thinking with an adult brain, not an angry toddler brain.
Some of the messaging from the SNP around immigration for example, is helpful because it gets people thinking about why immigration might be good and counters the scare mongering "invasion" and "we are full" narratives that other parties are playing on to ramp up fear and win votes.