Bullying: What does It mean?

After all the drama that's been going on recently, now it has escalated to something that's gotten way out of hand. Apparently some people think that giving a book anything below a three out of five stars is considered bullying.
I never really thought of it that way, but if you give a book a certain rating, but state why you rated it that way, I always thought it was giving your own opinion.  I think society now a days has gone soft and too sensitive as a whole. Whatever happened to the first amendment where we as citizens have the right to freedom of speech?
I just wanted to shed some light on what bullying really means. According to dictionary.com, bullying states that, "A blustering, quarrelsome, overbearing person, who habitually badgers and intimidates smaller or weaker people." 
Really? So, stating your own opinion about a book that someone requested for you to review, is now considered bullying when things don't go the author's way? And maybe it's just me, but I never considered an author as a smaller and weaker person. If you want your book to be reviewed, but don't like the outcome, that you shouldn't have requested a review in the first place.
And now apparently, any book I give less than a three star, the author has the right to say I'm bullying them? First, authors come to book bloggers to get their books noticed. Second, we have to invest our own time to actually read your work. In case you haven't noticed, most authors view their work as a profession. Book review blogging is a hobby. We do this for free, and this is not our top priority. We have jobs and school to attend to as well. And if you don't have a backbone to make it as an author, than you're screwed. Because there are some pretty opinionated people out there in the world, who won't sugar coat things just to make your life all the more peachy.
Maybe my new rating system should go as follows:


5/5 -- Loved it!
4/5-- Loved it!
3/5-- Loved it!
2/5--Loved It!
1/5-- Loved it!
DNF-- Loved It!


But how would authors, or anyone for that matter, IMPROVE, if there were not negative reviews?
And what about the rest of the world? Everything these days has reviews. Movies, fashion, restaurants, you name it. So are magazines like Entertainment Weekly, and newspapers like The New York Times, USA Today, The Washington Post all considered bullies for giving out reviews on restaurants, and music, etc?
And what about celebrities with their own reality shows, like Tyra Banks and her Top Model show, or Heidi Klum and her Project Runway show, or even Chef Gordon Ramsey and Hell's Kitchen? Are they all considered bullies for voicing their opinion?
Authors come to bloggers for two main reasons. To get their books out there and noticed, and to improve upon their work. When I first started blogging, I never bashed the author's work or the author themselves, but only stated why I rated their book the way I did. Why come to us if you're so afraid of rejection? And if you are afraid of rejection, then you better start looking for a profession that doesn't hurt your feelings. This post was brought on by a certain post, placed on The Huffington Post, but I am not stating who or the link as I do not want any backlash from those individuals. So, I leave you all with a question. Is giving any type of review less than a three star considered bullying, and should we allow sites like Amazon and Goodreads to use the rating system?