As I recall their tweet did not indicate that they had direct access to the identity (such as name or address) of those people. I think they mentioned their mun

As I recall their tweet did not indicate that they had direct access to the identity (such as name or address) of those people. I think they mentioned their municipality? Of course they have the raw data, but it's possible the people who sent that tweet just have access to a database that contains only anonymized data.