Can you be offended if you are white?

So I have been watching a programme on BBC I player call Dreaming whilst black. Some of the scenes in it play on very heavily on white people being stupid and stereotypical, for example a woman who is a judge at a competition to a mainly black audience says "I am a judge but I am sure that wont scare you as most of you scallywags have been in front of a judge before" It then shot straight to the main character who of course had a look of shock on his face. I am sure the bloke who wrote this will fall back on things like this happened to me, and I dont doubt in the past it would have. But I just find all of it a bit obvious and a little insulting.
so the question is can I and should I be offended?