Well, I don't know how to figure it out. It was -- "as quoted" --- a most easily seen as a stand-alone slap at people who object to chaos and lawlessness being imposed on their country. A humanitarian appeal on the HolyFather's part would better have taken a different form: Our churches and schools will be open tot take care of people's immediate needs. Neighboring nations --- not just the USA, not just Italy (Lampedusa)! --- should cooperate in settling people in the mid-term so they can have some sort of security. Smugglers must be prosecuted! Traffickers must be prosecuted! Exploiters of cheap labor are offending God! Nations that drive their own people away needy and in fear --- Libya, El Salvador, Sudan, Guatemala, Syria, Nicaragua etc. --- woe to you, oppressors of the poor!"
May these refugees someday soon overturn their oppressors and return home in security and peace!"
See, you can get pretty hot rhetorically, and much more accurately.
If only I wrote his speeches... :o)