How could Kathy Griffin think she didn't cross a line with her Islamic State group-beheads-the-president imitation? In a sense, her ignorance is understandable. Since Donald Trump was elected, there have been no lines to cross. Anything ... everything ... has been acceptable. The challenge has been not to temper the outrage but to push its limits. It was "art," she claimed at first. Despite taping a video apology, she was dumped by CNN, which had promoted this "comedian" for 10 years as New Year's Eve entertainment in Times Square alongside Anderson Cooper. It tells you everything you need to know...