The governments are doing mass murder all the time. You care about? That doesn't worry you? But you are worried about assault rifles in citizen's hand? Do you think to combat one gang there should be another?

You: "Assault weapons should not be in the hands of everyday citizens, full stop. Disagreement is supporting murder."
Me: "Supporting Violencemonopols is murder. Supporting governments is murder. Supporting delegate responsibility to "authorities" is murder."

Maybe, no it becomes more clear!?