The guardrails they've laid down are incredibly wide. A police officer died as a result of extreme rhetoric they left up from this guy - he had more than enough chances. I agree that these Tweets are only mildly inflammatory; but given the context that he should be doing everything in his power to calm the situation he caused, they're completely inappropriate.
Given that, "Is that really the world you want to live in?" ... Yes.
Given that, "Is that really the world you want to live in?" ... Yes.