"who are drunk or on drugs"
I don't know about everything else you are saying but yes it does seem like all the cases the series has put forward involve substance abuse. It is concerning from a simple human point of view that this does not seem to be being seen as a problem. 
No having an alcohol problem doesn't justify being assaulted but the women seem to have some serious problems surrounding their use of alcohol and the most obvious single thing that society could do to significantly improve their lives would be to get them some help with that.