I don't really have a problem with what he did, but does anyone remember the last time a nonbeliever made a public gathering to listen to some kind of anti-religious or atheist invocation?
This is a perfect example of religious, false-persecution complex. The school decided to use a moment of silence instead of the Lord's Prayer because it would allow all people to say their own prayers individually, or do whatever pertained to their beliefs during that time. Is there anything unreasonable about that? On the contrary, treating that as persecution against religion (really, it's more pro-religion, since it abandons the exclusive Christisn focus, as all secularism is) seems unreasonable and childish on the part of Christians.