By Dr. Lynn Webster, PNN Columnist

Good films entertain. Great films inspire. Sometimes, they even galvanize people to create a social movement against injustice.

I recently saw one of those rare movies that fall into the category of movies that can inspire: Joker.

The film moved me, and I think it has the capacity to raise the consciousness of other viewers, too. This is why I was surprised to read extremely negative critical reviews about Joker.

The Guardian dismissed the movie as being “shallow,” while the The New Yorker described the film as “numbing emptiness.” The New York Times labeled it as an “empty, foggy exercise in second-hand style and second-rate philosophizing.”

These reviewers all missed the point.

To me, Joker contains substance and in-depth messages about the shortcomings of our health care system, and the part that society's cruelty plays in the development of a psychopath. The gravity of the film caught me off guard.

I was expecting to see just another comic book/adventure movie, but this was far more than that. The film clearly shows a pattern of childhood trauma, repeated shame, income disparity, lack of health care, discrimination, corruption, and rebellion. In other words, Joker reflects real life through excellent and Oscar-nominated acting and production.

Joker demonstrates what happens if you take two people and put them in two different environments. You shower one person with money, love and other advantages, while you deprive the other of all those things.

The movie shows that the result is the creation of one hero and one anti-hero.

Batman's nemesis, the Joker, didn't start off as a bad person. He once was a child named Arthur Fleck.

Fleck’s story begins with the physical abuse he suffered as a child at the hands of a harsh, rigid father and an enabling mother with serious mental health problems. She alleges that she had an affair with the wealthy businessman and politician Thomas Wayne (father of Bruce Wayne, who eventually becomes Batman).

Fleck believes his mother had the affair and, therefore, he is owed respect and support from Thomas Wayne. However, a callous and cruel man causes Fleck to doubt his parentage. Fleck learns from this man that he may not be Wayne’s child, and that his mother may have adopted him and kept the truth hidden from him. This deceit causes him unbearable shame.

In a startling contrast of good vs. evil, Bruce Wayne is blessed with a happy childhood, while Fleck suffers layer upon layer of abuse. His rage builds throughout the movie with recurring episodes of humiliation.

Fleck develops a neurologic disorder called Pseudobulbar Affect, a condition of involuntary, uncontrollable laughter and crying. The condition sets him up to be repeatedly isolated and ridiculed.

Fleck comes to see the inequity of his upbringing. Because the man he still believes may be his father withholds economic and emotional support from him, he experiences escalating anger and mistrust of politicians and the wealthy.

Fleck holds it together until his health care benefits are cut off and he can no longer see his therapist or receive medication. Then he snaps and becomes society's worst nightmare: the Joker.

Batman fans know the rest of the plot. So does anyone who follows the news.

What the Joker experiences, and the consequences of those misfortunes, happen all too frequently in real life.

Society's failure to provide treatment for people with mental illness, and the cruelty with which we shun them, create the seeds of school shootings, terrorism, mass murders and other horrible crimes.

People aren't necessarily born with a greater capacity for hatred than others, nor are they necessarily destined to become criminals. They may be born with mental illness, but it is often environmental factors — including society's lack of empathy, and its failure to treat them humanely and compassionately — that put them over the edge.

My hope is that audiences will see that a "joker" is made, not born. Some of the same ingredients that create a psychopath may also sow the seeds for drug abuse and many other societal pathologies.

Joker is not shallow or empty. It is a reflection of what society experiences when people receive too little empathy, too little love and too little support.

Lynn R. Webster, MD, is a vice president of scientific affairs for PRA Health Sciences and consults with the pharmaceutical industry. He is author of the award-winning book, “The Painful Truth,” and co-producer of the documentary, “It Hurts Until You Die.” You can find Lynn on Twitter: @LynnRWebsterMD.

Opinions expressed here are those of the author alone and do not reflect the views or policy of PRA Health Sciences.