Much ado about nothing. This isn't on the public airwaves, no innocent children will stumble upon it: if you want to see it, you have to pay for the channel and bring it into your house.
Besides, vigilante stories are nothing new - even Batman used to kill criminals who fell through the cracks. Maybe this is a more gruesome treatment, but it's not a new idea.
The only real question is if the series is good or not. I don't have Showtime, so I can't speak to that.
I know nothing about this but Bozell frequently writes provocative articles and they can make for fun threads.
Issue number of the comic where Batman killed anyone, please.