I've linked a video. For purposes of discussion, I ask you to watch from about 38:12 to 44:00. It's a small segment, but it's moving. Anybody who tells you that libertarians (or any supporter of liberty, for that matter) are violent is selling you lies. The spine of libertarianism is that it is immoral to act violently against others - that it is wrong to use force against fellow humans. We have other principles, sure, and we disagree with each other. Some libertarians are more libertarian than others. However, every libertarian will tell you that it is wrong to use violence against others. It's the defining part of the movement. Any advocate for increased state power is an advocate for violence - violence against you and me. If you're interested, watch all the way to 46:20.