We don't see how ideology disadvantages us. Young people who smoke Women who wear huge platform shoes. The conservatives love it when poor and young people don't vote. The tobacco companies make a mint when they addict you for life. Women in heels not only risk cracking their ankles, they literally hobble their ability to walk as if they'd had bound feet.
All classes participate in shaping dominant ideology.
This is cross-cultural communication at its foundation level. The nuclear family is historically and culturally situated, yet we believe it is the way nature planned it. Fiske's example is the Seventeen magazine which suggests that girls with torn jeans also buy their magazine. A part that stands for a whole. Indexical, but needs cultural knowledge to decode what secondary meanings are implied.