There's likely a slippery slope fallacy in there somewhere (I hope). If interested in the (not so) sci-fi aspects of automated weapons and their ramifications, I often plug Daniel Suarez's great Kill Decision talk and book: https://www.youtube.com/watch?v=pMYYx_im5QI

Its deterministic and assumes that those in power are one uniform force. Its still possible to push for a different future.