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Nobody is opposed to relevant ads on TV (I mean, not any more than they're opposed to ads in general). it's the means by which they make them relevant. No one would be cool if Facebook sent agents to your home each night to rifle through your drawers to learn about you and "tailor ads to you and make them more relevant". That's the problem, the data-collecting and spying.
They're not selling personally identifiable information. They're selling generalized group info on categories people fall into for targeted ads.
I don't understand how this is a privacy violation or unethical. Especially given Facebook isn't hiding what it's doing, they're open about what they're doing. I assume the customers are informed and are consenting to this in exchange for free use of Facebook's services.
I think it was wrong for Ubuntu to sell user data to Amazon because their users weren't informed. Some people choose Linux for privacy reasons and that trust was violated.
No one who values privacy would willingly use Facebook. Facebook doesn't hide what it does, it's a consensual sharing of information. They even have a big button on their site inviting their users to try targeted ads. Everything they do is in the open.