Train travel in Europe is getting more dangerous than it used to be. Both the German and Italian railroad workers unions have raised the issue of growing crime on trains and in stations. In fact, the Italian uion had a strike over it after one of their conductors was punched, spit upon, and stabbed. The culprits according to both unions are a class of people one rarely saw on European trains 20+ years ago.
I have riden many miles on German and Italian trains in years past, as well as in most countries of Europe and never felt unsafe. Sadly, the situation seems to be changing.