Dale,
It wasn't the Mafia in the 20's and 30's (prohibition/depression). It was equal oportunity gangsterism. Just as many Germans and Irish and Jews as Italians.
:lol:
But depending on which city you lived in at which time, it could have been more dangerous then than it is today, about as dangerous or less dangerous. Location and population had a lot to do with it. There were plenty of 'drive by shootings' that didn't make the national news - but they were in Chicago and New York, not L.A. Plus, the national news was a lot 'smaller' then than it is today. A lot less immediate.
Where I grew up during the 50's and 60's I actually saw plenty of stories of 'drive by shootings' (or the equivalent) and personally knew of several people found slumped over the steering wheel of their car with a small hole in the back of their head in my own neighborhood (And those were Mafia, BTW.) There was a story that didn't get a lot of national press that was all over the NY newspapers in the mid-sixties where a couple of button men gunned down three (four?) people in a Manhattan bar. Turns out they were businessmen from the midwest and not the intended targets. (ooops!) Not technically a drive by, but the same result.
And in HS I knew three guys that hung a teacher out of the fourth floor window (this was in 1967) holding him by his ankles. Also, a teacher had to be careful who he pissed off or he might find his tires flattened (if you owned a vehicle) or find himself behind a mysterious beating on the way home one night.
Was it as dangerous then as now? I honestly can't say for 100% certain. But my memory says 'yeah it was, or at least it was close. And at times, more dangerous.'
As for walking downtown at night - once again - today (as then) it depended on who you were, where downtown you were walking, how many were together and what time of night. There were always parts of NYC a middle aged white guy should avoid - and they weren't all black or hispanic back then than any more than they are today.
There is a line in Casablanca (1941) where the German Major asks Rick (Bogart) what he thinks of Nazi's in NY. The reply?
"Well there are certain sections of New York, Major, that I wouldn't advise you to try to invade."
Sounds pretty dangerous to me...