I'm willing to give LEO the benefit of a doubt until I have more facts. To do otherwise would be to behave stupidly.
He could have been under specific orders "no graphic images" "no pictures of people", and protesting on school property is different than public places.
But I'd like to know more.
The high school was being used as a public forum in this instance. Moran and the school district can't have it both ways. They can't invite the public to the school for the express purpose of voicing their their opinions on a controversial public issue and then arbitrarily limit that speech to speech they find acceptable.