This may not be official, but the latin word for sad is miserabilis and people is populus
So the phobia for being afraid of depressed people is something like miserabilispopulusaphobia for someone who is afraid of or has hate against depressed people, they would be a miserabilispopulusaphobiac (noun form) or they could be described as
miserabilispopulusaphobic (adjective form)
atychiphobia some people have this phobia
There is no perticular phobia word for that but there is "anthropophobia" fear of people and society, "enochlophobia" fear of crowds.
Esaiophobia is the fear of Mexican people.
Ochlophobia is the fear of crowds.
A phobia is a severely intense and persistent fear of a specific activity or object. Phobias usually seem irrational to outside people, but they are uncontrollable and terrifying to the people experiencing the fear.
Androchaetophobia is the fear of hairy men. Chaetophobia is the fear of hairy people. Androphobia is the fear of men.
Pistanthrophobia - the fear of trusting people.
meanolcityphobia
Cacomorphobia
Social phobia
Socianthphobia
The correct term is Anthropophobia (fear of people or society), or Sociophobia (fear of social situations).