Mean DCA Gate Agent @ DCA
All I will say is the pen is mightier than the sword. I've been on 7 American Airlines flights within the past 3 weeks and everyone has been wonderful - from the gate agents to the pilots, flight attendants except for one notorious individual who has been covered in Reddit before. At least I hope for American Airlines' sake it is one individual.
If you encounter this individual, keep your cool and contact American Airlines. This helps you, it helps American Airlines employees who are embarrassed by a bad apple, and it definitely helps future travelers.