They simply follow all the hackneyed political discourse from the MSM for as long as their amoeba like concentration span allows, before continuing their orgy of ready meals, soap operas and reality kitchen shows....
It's question of lack of affect. Some people can imagine the horror which is happening, others know it intellectually but can't really take it in. They may be further towards the autistic end of the spectrum? They have trouble relating to other people and/or therefore seeing any urgency in dealing with it.
I expect that if they were faced with a child lost, injured, crying in the street they would go up to him and take responsibility - because it is right there to be dealt with and doesn't require a leap of imagination. Itr is not as easy to ignore it as something happening hundreds of mile away.
The suggestion that refugees should just stay in the nearest safe country ie Jordan etc. begs the question. There comes a time when the nearest countries have so many millions of refugees that their infrastructure just won't cope. This is particularly the case when the country, like those in the Middle east, are desperately poor themselves. We are one of the richest countries in the world yet we claim to be struggling with EU migrants who have come here to work . Much more easy to deal with than the traumatised, maybe physically and mentally damaged, refugees from Syria etc.
We also have a particular responsibility for these refugees because we were complicit in the decisions to draw artificial borders to create these countries with populations with little in common or historic mutual hostility. We set them up to fail. We also have been invading other countries, ( Libya, Iraq etc. ) bombing them, creating the situation the refugees are fleeing from.
History may condemn us as heartless brutes.