* Gay marriage (lack of)

* Drug prohibition

...always immediately jump out at me; I'm sure there are many, many others.

Interestingly, the article didn't mention the first, and barely touched the second.

Their hypothesis on when something is surely to be condemned in the future requires universal lack of moral defensibility. Right now, the detractors on both of these issues are still claiming they are speaking from morality, so the article didn't list them.

That said, I agree with you. The article, however, implies that these issues are not yet inevitably going to be looked down on in the future. (whew, run on sentence much?)

Factory farming

Do you really think humanity isn't doing anything else wrong?

I honestly think we are doing a lot of wrong things. I argue they are hard to see for us since this is what is 'normal' for us right now.

I agree. It's difficult to judge what will be, without hindsight.

I suppose even the most controversial 'serious' issues, aren't unanimously agreed upon as a problem by all .. the way we view history will probably vary widely from the course that we assume we're travelling along.