[s1artibartfast]

I wasn't implying that it depends on sensitivity changes, although that is possible too. Sorry if I wasn't clear on that.

My thought was more about time and distance. Something can be unpopular or even wrong when it's first said too. People are dynamic and change over time. The mechanism of change is living their lives.

Taboos can change as well, so there is a motivation to steer clear of controversial topics in recorded media. You can use discretion to judge risk. It's unlikely that someone's going to fire you for discussing ice cream in 10 years.

[ryandrake]

Yea, that's also a big danger: A totally innocent or trivial comment written today might be taboo in 10 years, and some future justice warrior is sure to dig it up and use it against you, and you have no idea what is going to be taboo. Maybe in the far future, owning pets will be taboo, and all the pictures of me and my dog are going to be dug up and used to shame me for violating an animal's sovereignty or something.

There is no way to know what people are going to get offended about in the future, but the clear trend is people getting offended about more and more things over time, rather than fewer and fewer things.