3) Trump was taking appropriate action. Just as a thought exercise, let's assume for a moment that Trump is not Russia's stooge. Comey lost the trust of both parties last year by inserting himself into the campaign multiple times. Just a few days ago he testified before Congress about his actions. Despite his rationalizations, the Democrats were still livid at him. The Republicans still haven't forgiven him for letting Hillary Clinton off the hook by saying that no reasonable prosecutor would file charges. Comey was a distraction for the FBI and no one trusted him. The best thing to do was fire him.
2) Political posturing. Many on the left are calling for a special prosecutor to investigate. Savvy operators know that special prosecutors can run wild. Look at Clinton - the special prosecutor was appointed to investigate if Clinton as Governor gave special treatment to Whitewater Savings where Chelsea's college fund was invested but ended up investigating charges of sexual harassment in the White House. The hope is that once a prosecutor is appointed to investigate Trump, he won't stop until he finds an impeachable offense.
1) Trump Derangement Syndrome. To many on the left, everything that Trump does is ominous and self-centered. They've never given up on the idea that Trump is a Russian puppet so they see this as just one more piece of evidence. They are the Trump version of Birthers.
President Trump fired the director of the FBI. This was the first time a president has fired an FBI director since President Clinton fired William Sessions in 1993. The Democrats and the press (which are practically the same thing) went wild, insisting that this was done because Comey was investigating Trump's connections to Russia. They insisted this despite Comey saying repeatedly that the FBI was not investigating the President.So, what's going on? I can see three possibilities: