I also ocassionally have a "people phobia", which is when I am at my worst with the Depression and Anxiety, I tend to stay indoors. I also have difficulties with public transport, shops etc, but you have to remember with all these places where you are mixing socially, that you have as much right to be there, as they do.
I also often feel that people are directing animosity towards me, but that is mainly when I am feeling what Psychologists call " Emotional Arousal", which covers things like Anxiety etc. if you weren't feeling anxious, then you wouldn't necessarily feel peoples animosity towards you, or if you did, you would be able to brush it off. Remember, whenever you are in a situation, where it means mixing with other people, you have as much right to be there, as anyone else.