Question
If the first day of the 9 days is Rosh Chodesh, then why is that day observed as a day of mourning? On the contrast, if it is a day of mourning, then why is Hallel still recited?

Question
Dear Rabbi, Yesterday I was in the supermarket when a middle aged woman got angry at the customer service for a reason unknown to me. She then went on a profanity laced tirade in which she screamed at the employees. For most of the approximately 6 minutes this went on, I filmed the incident and showed the footage to my immediate family and a few friends. She then left quickly when she heard the police were on the way. As far as I know, her identity is unknown to the store and the police, and I surely have no idea who she is. The police just took a report, but because no money was stolen and no one was hurt, they don’t have any further plans to identify her. I have seen a lot of viral videos just like that on YouTube, taken by people who chose to film it just like I did. What I would like to know is if Jewish law permits publishing videos like this. I am concerned it could be Lashon Hara, or if any other laws prohibit posting this, since it is shameful to the woman who lost control.