My take on this nonsense that seems to be so prevalent these days? Simple:
People too readily validate their kids' emotions from a young age; that combined with a lack of philosophical education (logic, reason, forming arguments) leads to this stuff. It's vital to teach your kids to a) challenge assumptions (others' and their own) and possibly more importantly, challenge their own emotional states. Not every moment of sadness, anger or depression (or in this case, 'offense') is reasonable or based on valid assumptions and if they don't learn to challenge them or push through/ignore them (at times, not always obviously) then they end up being like this- unreasonably offended/emotional and then acting upon this shaky foundation.
