> Previously, even Jewish communists and gangsters married Jews
And maybe non-Jews did not want to marry Jews also.. Rav Schach writes that Hashem arranged for Arab hatred if early Zionists. Otherwise, they would all go to study in Cairo and Beirut and intermarry…This also seem to mean that R Schach cared about these guys..
As to gangsters, I am told by a person who somehow knows, that Bugsy Siegal, would show up unannounced at other gangsters’ funeral (at a personal risk of being caught) but did not enter the cemetery (as a Cohen).