Witchy Wednesday was shut down in Orange High School, Orlando area, due to Christian group. [View all]

This was just posted in the Orlando Sentinel, but I don't have a subscription, so the details are

Here is the situation and my question follows:

A Christian group shut down a Witchy Wednesday event in the school claiming it offended certain people's religious belief. If that's all it took, then how is it that all kinds of Christian references are filtering in the public schools? Is the other side just too shy to complain? And if they did complain, would it be just as easy to remove the references from the school, as it was to remove Witchy Wednesday?