I'd be careful. If you make too much noise people will go watch it just to see what all the fuss is about.
A month or so ago my grandmother forwarded me an e-mail. I'm not questioning the sincerity of those that wrote it and passed it on, but the e-mail was about this play (which isn't even showing in my area) and how we have to be against it. Fine. However, I would have never heard of this play had I not gotten the e-mail. I only clicked on the link to this thread because I've heard of the play before.
Remember the DaVinci Code? Dan Brown's novels barely made a ripple in the sea of publishing before the Catholic Church mentioned DaVinci Code. I'm one of those that read it because I wanted to see what all the fuss was about. Billy Joel wrote a song "Only the Good Die Young" which wasn't a hit up until a priest complained about it.
I remember after the DaVinci Code came out my Archdiocese had a Q&A with a priest (Alberto Cutie) and 2 other scholars about the book and film. Fr. Cutie said that once he and his youth group protested outside a theater because they were playing a film that was blasphemous against the Blessed Mother. He said because of the protest, more people went inside that day than ever before just to see what the noise was about. So he was telling us to be cautious when it comes to protesting things like this because it will draw attention that it otherwise wouldn't have.
Unfortunately, sometimes the best thing that could happen to a novel or film is that the Catholic Church or those in the Church criticize it. It's just the truth.
I'm not saying don't do anything, I'm just saying, be careful. Too much noise and it will draw unwanted attention to the play. I didn't even know about it until someone complained about it to me. So what did I do? I went to YouTube to see what it was. I'd never see the play, but it's things like that that make people go out and want to see it.