This act took place at night at 7:30 p.m. and it was a cold and windy night. I started walking very close to this male and as soon as he noticed him he stopped, looked at me and asked me if I needed anything and I told him no and he started walking again. As he started walking again I started following him again and this time he stopped and told me to leave him alone in a very aggressive and angry voice. As soon as I started following him, I felt that he seemed frustrated and tired and didn't want to converse or interact with anyone. The night was also dark and he could have been aggressive because he felt uncomfortable with me following him and didn't trust me. People feel less comfortable if a stranger invades their personal space at night rather than during the day. Invading people's personal space can be very uncomfortable and threatening for many people because it violates a norm and constitutes deviant behavior.