Point 1: You didn't go Godwin on "removal of private gun ownership", you did it on mere registration. Changing parameters to defend your point is bad arguing too.
Point 2: I'm a pro-gun liberal. I'm also opposed to gun registration. I kicked you around on it not to support gun registration, but rather because you're making my side of the argument look bad. I don't want the people I agree with making crappy omg hitler!11!! arguments because it makes my job that much harder.
Point 3: If you can't show how gun registration is bad (or ineffective, which is my usual tack) without saying omg hitler, you're not going to convince anyone that you're right.
I think there is a sizable minority that wants anybody who isn't in jail to be well armed, whether or not they agree with me politically, and I'm in that minority. I think it benefits society. I sort of vacillate between conservative and libertarian depending on the issue and the day of the week myself, but I think pro-gun liberals are a great addition.
I think there is a sizable minority that wants nobody to have guns, for various reasons, but typically because they actually think it'll stop violence. I think that won't work at all, and has lots of negative effects. It isn't a coincidence that all of the mass shootings happen in "gun free zones".
I think there is a vanishingly small number of people who actually want to disarm society in order to try and push a Nazi-like situation. But, imagine an America where the NSA that Snowden has told us about are the only people with firearms. Do you want to live there?
Small logical problem there, common in pro-gun circles. The reason mass shooting happen in "gun free zones" is because those are the places where people are concentrated. The idea that mass murderers are afraid of armed self-defense is utter nonsense - after all, they know they will be engaged with the police quickly enough.
Point 2: I'm a pro-gun liberal. I'm also opposed to gun registration. I kicked you around on it not to support gun registration, but rather because you're making my side of the argument look bad. I don't want the people I agree with making crappy omg hitler!11!! arguments because it makes my job that much harder.
Point 3: If you can't show how gun registration is bad (or ineffective, which is my usual tack) without saying omg hitler, you're not going to convince anyone that you're right.