Why is it that everytime u meet a middle eastern, u immediatly count him as a terrorist?

it is to dehumanize your people and the culture so that americans wont be upset about their goverment killing innocent people i have met many muslims adn other people from the middle east and haven tsuspected one of them being a terrorist although if they were from their country and not born in the US i had plenty of questions cause I find different cultures interesting. if the media outlets portrayed middle easterners as people jsut like the rest of us it would greatly reduce the prejudices against the middle east but sadly this is not the case