I apologize for any confusion, I am trying to remain vague as I don't feel comfortable giving out too many details. Let me try to clear some things up.

As part of the outreach program I volunteer with, my group and I go to locations that are frequented for trafficking, such as bars, strip clubs, etc. As part of the outreach, we communicate with the bartenders and dancers and hand out information about safe places to go if there's ever a dangerous situation. In one of the locations we attended, I saw this man that I know (we'll call him John). My group and I have received reliable information that a specific section of the location we were at is dedicated to illegal activities (prostitution via trafficking, etc). John was in said location. At the time that I confronted him, there was no one else in the location, although it was implied that he was waiting for a girl to arrive (we have seen this happen many times before). I explained what I was doing there, to which John got very uncomfortable and angry and told me to never tell anyone I saw him there. I did not witness him doing anything illegal, and even gave him opportunity to explain himself. However, instead, John got angry, which tells me that he was likely engaging in the kind of activity I thought he was. This is not grounds to alert the authorities because I do not have incriminating evidence, I just have what I know based on the multiple other eyewitness encounters my group and I have had.

I am now left with a decision as to what to do. I interact with him and his friends regularly. They are heavily against this kind of behavior, and I feel as if they might have a right to know, although I'm not sure that is my place to tell them. I cannot contact the authorities because I don't have proof. I am just anxious and confused and feel as though I'm bearing a heavy piece of information about this man.

I hope that helps to clarify some things. This has been very distressing for me, and I would appreciate it if further replies took this into consideration. Your previous comments, StreetcarBlanche have made me feel attacked and more confused. I appreciate you trying to help, but increased sensitivity would be lovely. Thank you!