Frost Threatens Dragonetti in the Meeting
Said he might wake up at a stake someday for no reason. He was mostly agreeing with him and he lashed out at him and threaten him. I was actually surprised nobody else did anything to him and there is never any explaination why a half blood is at the meeting with the pure blood leaders and why his opinion at all counts.
In any other real life organization Frost would've been killed right there in there.