Refugees are victims of the war. If they wanted to involve violence, they would not be refugees looking for home. Why to see them as potential terrorists ?
The events are most likely unrelated, but there is a habit to generalize. And escalation of that generalization is what is a concern to me.
Is it derived from the slang term that train hoppers and other people in hobo culture use for the temporary, makeshift residences they hold in the woods near train yards during travel?