joshua horowitz is the executive director of the coalition to stop gun violence. he is a visiting scholar at john hopkins bloomberg school of public health and he is the co-author with casey anderson of "guns, democracy, and the insurrectionist idea." >> my name is josh horowitz, thank you very much for having me tonight. as professor churchill said i'm the co-author of "guns, democracy and the insurrectio insurrectionist idea." i am very pleased to be here and i want to thank professor horowitz for being here, this is his brain child and thank you very much for doing that. i wrote -- casey and i wrote this book and we tout about this book as a critique of the idea that unfettered access to firearms keeps us free, so today in this debate, we're not necessarily talking about the right to conceal-carry, the ability to own assault weapons. what we're talking about is the idea that political violence is authorized -- with arms is authorized under the constitution, is that part of our second amendment legacy and then of course, is that something that's healthy and good