Censorship

My local guild has an exhibit of quilts traveling around the state, stopping at various venues for varying lengths of time, until next spring 2017. We've had a huge variety of slices of life depicted without a problem. This year, at the current venue, the quilt I made was removed from the display. Here is my quilt:

(The words on the front say "Her last day of school.") I made it to express my sorrow at gun violence, especially towards children.

Without any discussion, it was removed from the current venue; it has essentially been censored. I realize it's not an easy quilt to look at, but... it came from my heart and expresses my horror. Art isn't supposed to always be cute and happy. If it is thought-provoking, that's a good thing, in my mind.

So I was interested in this blog post regarding quilt censorship. A quilt was pulled from an AQS show, because someone thought she saw a penis in the quilt (there isn't one). Is nudity now (suddenly) not allowed in art work? Here's a link to the other blog post by Tanya Brown:
http://www.tanyabrown.org/blog/?p=3486

(Hmm... it isn't linking. I'm not sure why. You may have to copy and paste to your browser to go see the post.)
A friend of mine said she thinks that especially when it comes to quilts, people expect them to be pretty and happy, whereas other art media have more leeway in what they depict. What do you think?