It comes down to this...I believe a Christian has the right to make a Christian prayer EVEN in public. If a Rabbi had said " in the Messiah's name, we say "Amen"", I would not join in (as he is speaking to, about, a being which I have no interaction with) but I wouldn't be offended and assume that Jews were the only people he was including in his prayer.
As long as there are opportunities for Jewish prayer, Christian prayer, Muslim prayer, whatever prayer, I think we are being fair and inclusive of all peoples and THAT is what our Constitution compells us to do. It isn't clear in this case that there are any Jewish led invocations at all. THAT is wrong, IMO. If all types of religions cannot be represented then it is wrong to represent ONLY one.
This is not the case; this is not a Christian saying a prayer in public. This is a person leading others in public.
If a minister at a youth service chooses very long, very deep prayers and requests 8-year-olds to follow him that would be deemed inappropriate. The members of the community would ask that he choose something more appropriate for the students' age. That would not be read as request to wather down Christianity, or affront on Christianity itself.
And it does amaze me: no matter how much you explicitly state that this is NOT the angle that bothers you, people on this thread see only one angle: an outsider is attacking Christianity.
Having spent several hours on this thread, I can now say that this reaction is simply pathetic. And scary.