That link is to a very questionable video. Even the following commenters note the sketchiness of the video.
I’ll need more than that apparently altered video to believe Newt is as broken as you say he is.
Here’s the same campaign event at another angle: http://www.youtube.com/watch?v=W3x-OvhIwig
The full footage is even worse because it shows the full context and he explicitly states he’s not kidding. These are from his 2012 campaign.