Profound ignorance or an agenda are the only possible explanations.
Actually, no. Ignorance is when you choose to remain uneducated. You’ve decided that all Muslims are bad people even in the face of contrary evidence. I don’t think you watched the show in question, though even if you did it you’d only view it as reinforcement of your prejudice. I suspect you don’t know any Muslims and that you’re quite happy with that. This seems to really fit any definition of ignorance I’ve seen, and this is being kind.