Who did this to Ebba? What are they doing in Europe? (((Who))) and what caused them to leave their homeland? This is a war of attrition. Rather than killing the savage animals one by one, why not kill the owner of the savage animals to stop them from being released? 
Why not kill the Jews who destabilized the Middle East and allowed muslims to flow in? Imagine treating an illness before cutting off the cause of said illness while you have very limited resources. That’s what tarrants shooting is.