I wouldn’t say mine are bad, they are just near the top of the pecking order, whereas the Orpingtons are at the bottom. I also have two ISA Browns, and four Barred Rocks, one of which is a cockerel. The two ISAs are actually the top birds (they are also older), followed by the RIR, then the BR, and finally the BO. Though technically, one of my BR pullets is actually the bottom girl.
The RIRs are very friendly with me. They also know their place below the two ISAs, who definitely let them know who is boss...for now.
No one is getting hurt, only chased away from some things.
I have a Buff Orpington named Marshy who is the very top of the pecking order. (She is the one on the right - Creampuff is on the left)