Another research site here in Brazil had issues when announcing in social media recruitment for a biomedical prevention trial for MSM. There were pictures of gay couples and a message based on a call for helping the progress of HIV science. There was a mobilization of people who made negative comments on “associating MSM and HIV”, with an accusing tone. It was not difficult to defend the purpose of the trial against such unfounded allegations, but it was really a source of distress for the team.