You have a conclusion that you want to defend and some biases you're unaware of, so you're also not aware how tortured this argument sounds.

Pick some other topic. For example: are people who thinkthat slavery is inherently and always wrong just stupid extremists, compared to people who accept that 'some' slavery is fine?

I feel like you're the type to walk around with calipers.

Edit: see https://news.ycombinator.com/item?id=49436484 for a better written argument.