What are we teaching the children?

What are we teaching our children to accept in our schools?
Recently I had a discussion with a retired school teacher.  We were discussing school violence and the lack of awareness to the causes, escalation of behaviors, and pure ignorance of the rights of children who are not violent.  The retired teacher was often involved in learning situations which dictated in class support.
As a former teacher and not a fan of inclusion as the only option for class placement, the newly retired teacher's testimony of eye witness accounts of violent behavior by a grade school child reminded me of days gone past.
The teacher described ongoing scenes in which one violent prone child would demonstrate behaviors which put the classmates and staff in the direct line of the violent behavior.  The classroom teacher, described as low key, allowed the violent child to throw desks.  The other children would be moved to the side of the classroom until the episode was over.  The violent child would then be escorted from the class for counseling, as the children in the classroom would be instructed to pick up the desks and their materials.  They would then be expected to resume their work.
What is wrong with this picture?