Are we becoming overly sensitive ?

I am a historical reenactor. We do Civil War living history shows. Obviously there are both Union and Confederate soldiers and camps for each. Recently, we were doing one here in Michigan and a school had a field trip to our event. There was an African-American teacher who started a huge scene in front of her cl while going through the rebel camp. She demanded that all the confederate battle flags be taken down. This was an historical show, These are reenactors, not slave owners. Do you believe she was overreacting or were we the reenactors wrong for being accurate.