If by conservative you mean wanting to keep slavery, and by progressive you mean wanting to end slavery, then sure the Democrats were conservative in that sense, and the Republicans were founded to end slavery, which was a progressive idea at the time.
Ok so then the KKK is conservative in that they want black people to be second class citizens. You like to lump all types of conservatives together and say we're all the same thing. Modern conservative Republicans are nothing like today's "conservative" KKK Democrats, and they never were.
"What do you base that on?"
Sorry, I was unclear. I didn't mean politically liberal. I meant theologically liberal. And by that, I meant that Catholics (well the more traditional ones anyway) have kept 2000 year old traditions in their religion, while Protestants on the other hand, invented new, progressive religious ideas only 500 years ago. I agree that there are both politically conservative and politically liberal Protestants, and Catholics as well.
Liberal means open to drastic and rapid change. Completely re-interpreting the Bible and removing 7 books is pretty drastic. Agreed, times were different then, and he probably wasn't the type of liberal we have around today, but his ideas were very liberal in the context of the Church.
"The Bible doesn't say that if you kill someone you aren't a Christian."
The Bible is not a step by step handbook, and it doesn't use that kind of language. I think you understand this, but you're trying to get super technical. No, the Bible doesn't list off each possible sin and after each one explicitly say, "If you do this then you're not Christian," but I think we both know what it's saying.