After years of rigorous training, ballet dancers become accustomed to constructive and oftentimes harsh criticism. Being scrutinized is something that comes with the territory.
I myself spent the better half of my high school years in Russia, where political correctness does not get in the way of progress. We were trained to use criticism as fuel to propel us forward. Everything said in class or rehearsal was meant to help better ourselves and not to be taken personally.
But where is the line between helpful advice and offensive language?