Whaaaaaaaat? Well, according to official statistics.
From my father's side, we had relatives living in a closed down military city, but they were totally paranoid about break-ins during "Peak Brezhnev." Break ins were 50/50 annual events.
Street poverty existed as well, just not in big cities, where classless were either branded as substance abusers and locked away in jail, or being labeled as mentally ill and locked away in jail.
The regime tried really, really hard to make it appear that there were something wrong with the classless people, and "you keep your head low and everything be alright"