Awful day of school

I posted something on Facebook page about this last night not realizing this depth of how bad it was. Wondering if maybe my daughter was over reacting. I had 155 comments within two hours of other parents voicing the same concerns. I even had one staff of FMS who works in the office tell me “it was the worst thing she has even seen and that the children were talked to like dogs”.
I am just heartbroken and feel at such a loss to describe to you how hurt and upset I am. I demand that something be done to address this situation. My child deserves a great education and should feel safe and loved at school.