I respect your opinion and while your personal arguments are reasonable, as always, I disagree with you that the mother should not be allowed to videotape the speakers. There is a possibility that a lot of the parents of those who attend this school and, those of the kids who attended these workshops even, are not aware of just what is being spoken of during these classes and may be appalled that their children, gay or straight, are being subjected to such.
Like one poster asked, (paraphrased)- if the truth is so "grand" what are they so afraid of? I see no difference in videotaping this than in videotaping another school function, be it a school play, sports event or the like.
Bravo! I should be pointed out that not all parents with gay MINOR children are thrill with Junior's sexuality. Until the 9th Circus tells us what to think on that matter, nobody else can.