Of course Rome has been overrun by barbarians in the past.  Sadly it is happening again though this time it is ... high school students.  They are everywhere in large marauding groups centered around a lone adult futility seeking to impart some knowledge to a chattering mob.  They can be seen frequently sacking Pizza places and storming and inadvertently overrunning museums, churches and historical sites all to then detriment of your more refined tourist.  In this they are aided by an unaffiliated but noisy cavalry arm who attack from everywhere

Even Moses is displeased

E

So I have had to go native with new headgear