Why Has The P.C. Culture Occurred

In our day and age there is a chance that almost any sentence you could possibly think of could be offensive to someone in some way.  There are many hypotheticals in that claim, but it goes to show the uncertainty in everyday conversations.  You could be having a nice conversation with a friend of yours and by saying the wrong phrase the conversation turns into a fight.  Now as stated in The Word Police, the idea of a more "inclusive society in which racism, political correctness, and prejudice of all sorts have been erased" seems amazing, but the public has taken these values too far in how something small can offend.  Why has our society become like this?  Just a decade or two ago this problem was not as apparent.  Right now in America our sitting President is a very polarizing man. People either love or hate Donald Trump without very much in between.  One of the most distinguishing things that Trump has done different than any other of our previous presidents is that he is constantly tweeting and voicing his opinion about things that he doesn't like.  Now the President of the United States is the biggest role model for the American citizen, so when he is seen voicing his opinion and seeming upset about even minute things when he is the leader of our nation it makes the general public feel that they should be criticizing every little thing as well.  For the people who despise the President, the problem still stands because they work to disagree with everything that he agrees with.  The President making a remark against any race or culture will cause a torrent of people criticizing his view and anyone who has views even remotely close to that.  All this has developed over time and caused a feeling that any topic or view can be spun to look offensive in the eyes of another person.