Catholic Schools " Ban " Rainbows - What's The Matter With Rainbows ?

Question what does the above picture "represent "? Is it racism via the KKK , or a reference to a garment that is worn during a important Spanish Religious festival ?

As one tweet from a LBGT said the Catholic Church " bans refraction" Of course they have not but since this happened in Ontario Canada we can guess what this is about. We see here:

Catholic School Bans Rainbows
An Ontario Catholic school has gone one step further than Tennessee's idiotic "don't say gay" bill — they've banned rainbows.
According to Xtra, St. Joseph Catholic Secondary School allowed its unofficial gay-straight alliance (official GSAs are banned) to hold an anti-homophobia event, but then prohibited all rainbow banners and posters. Said Leanne Iskander, founder of the unofficial group,
We brought signs and posters with rainbows and we were told that we can't put them up. They said rainbows are associated with Pride. There's so many other things that a rainbow could be. It's ridiculous.

The kids got around the ban by baking cupcakes with rainbow batter. But they still had to deal with lots of other limitations. Among other things their school banned:.......

Well I suppose it's true of course that there many things that could be linked with rainbows ,and I suspect rainbows have not been banned from science class. However that's not really the point is it. In the USA lets says a Court house put a giant Fish Symbol up. The ACLU would go that is an illegal endorsement of religion. The argument that a Fish can represent many other things would not fly.

Or what if a County building put a giant STAR up. Well stars can be associated with lots of things too but we all know what it represents this time of year. Does a display of the ten commandments on a State property represent an endorsement of religion or is it there just to represent part of the historical foundation of our law. These examples could go on and on.