I go to the movies. I carry a cell phone (like a gazillion other people) and I send/received texts (just like a gazillion other people). I've had folks in worship services that had their phones ring, etc., and some folks who have been sending/receiving texts during service. It's not the end of the world. I do routinely insist that cell phones be cut off prior to weddings and funerals. If someone can't abide by that requirement, they are invited to leave the worship space. That's about the only place I can think of where using a cell phone is truly out of line. A movie theater is not sacred. When I go to the movies, things sometime happen that I don't like... maybe someone laughing or talking or a soft-drink getting spilled, etc. It certainly doesn't merit explosive anger much less murder and attempted murder. It would seem to be reasonable if someone really found texting, etc. so objectionable they would contact the management and register their complaint.