Ever since Trump won the election the media, Democratic Party, and their voters have never accepted the election results have have done everything to undermine the Presidency and the very fabric of our Republic.  They have thrown everything at President Trump: Lies, slander, regular threats of assassinations, cheering New York City play about assassinating the President, beheading the President, rap songs of killing the President, false impeachment charges, violence, shooting Republicans, cheering the shooting of Republicans, etc (the list goes on).  

And when President Trump responds with some benign tweets this Carl Bernstein character thinks it's a 'malignant presidency' and he's never seen anything like it?

Well Carl, what you are seeing is a strong leader that doesn't have to take your crap and has no plans to ever take your crap.  Get use to it, pud.