Atlanta and many other places in the USA are in the midst of a housing crisis.
Homelessness has always been a problem, but now many people who never imagined themselves being in that position are finding themselves facing the prospect of being without secure accommodation, and homelessness will likely  become more of an issue in the near future.
This is confronting to witness, and many homeless persons also have serious health issues.
What is a concerned citizen to do?
PAD is The Policing Alternatives & Diversion Initiative.  
When you see an individual in need, call 311 and please state clearly exactly what the situation is and they will send a team to the site and try to assist the individual.  This program is working well and getting good reviews. 
Hours of operation currently are only until 7pm but hoping to expand in the future. 
https://www.atlantapad.org/