The FBI identified Aaron Alexis, a 34-year-old military contractor from Texas, as the perpetrator of the shooting rampage at the Washington Navy Yard on Monday, September 16. Authorities said at least 12 people -- and Alexis -- were killed in the shooting. 
Two days before the shooting, Alexis spent "a couple hours" shooting at Sharpshooters Small Arms Range in northern Virginia before buying the Remington 870 shotgun -- after being approved by the federal background check -- and a small amount of ammunition, the store's attorney, J. Michael Slocum, said. 
Alexis appears to have had sporadic run-ins with the law, dating to at least 2004. Authorities are still searching for more information about him, and they're asking the public for help. 
CNN obtained a series of images of Alexis from Kristi Suthamtewakul, the wife of his friend and former roommate Nutpisit Suthamtewakul, owner of the Happy Bowl Thai restaurant in Fort Worth, Texas, where Alexis used to work. 
Nutpisit Suthamtewakul reeled at the news that Alexis was involved in the rampage at the Navy Yard. "I can't believe he did this," he said. "He never showed any sign of violence." 
Alexis, who was from New York, served as a full-time Navy reservist between 2007 and 2011, according to military records. 
His last known address was outside Fort Worth, Texas. 
Authorities have not released a possible motive for the shooting. - Suicide reportedly is the third leading cause of death for black males ages 10 to 24
- Michaela Angela Davis: A black man in pain is a story rarely told so it's hard to believe otherwise
- She says Navy yard gunman had issues and should have been checked for mental illness
- Davis asks: Can we as a society become more sensitive to black men who need help?
Editor's note: Michaela Angela Davis, a writer and activist, was the executive fashion, beauty and culture editor at Essence, editor in chief of Honey magazine and fashion director for Vibe magazine.
(CNN) -- "I was suicidal in college," a Harry Potter-looking hipster recently told me. The young man's words stunned me. It wasn't his age or gender or style that took me by surprise. It was because he's black.
Even though suicide is the third leading cause of death for black males ages 10 to 24, I had no immediate image, no ready reference for a young black man hurting so bad he wanted to die or for a black man so sick he was driven to kill.
The recent mass shooting by Aaron Alexis at the Washington Navy Yard was horrific and tragic. It made me think about the interior lives of black men -- about how little anyone knows how black men feel when they're in agony or depression.
Black man in pain is a story rarely told.
Hip-hop is considered a safe and powerful space to tell black men's stories. Yet Eminem is the rapper best known for narratives about suicide, addiction and emotional pain.
See video of Navy Yard shooter 
Before he was the Navy yard shooter It's easy to imagine someone who looks like Eminem, Kurt Cobain or Alexander McQueen as suffering from depression. But Lee Thompson Young? Not so much.
There's no quintessential cult movie -- a "Black Boy, Interrupted" so to speak -- where we see a black man who struggles with depression or distress. There are even fewer examples of black men seeking help. "The Bob Newhart Show," "M*A*S*H," "Frasier," "In Treatment" and "The Sopranos" are all shows involving men in or providing therapy. They are all white.
It's hard to believe what you've never seen.
The conventional narratives about black men tend to be narrow and depthless. They are often presented in two distinct and superficial ways -- as the criminal or as the incredible. Sometimes you'll see them behind bars or in the courtroom. Other times you'll see them in the limelight. Just turn on the TV and the black men you see are actual or fictional lawbreakers. Or they are superstars.
Aside from these two stereotypical identities, we know nearly nothing about the inner lives of black men. Are they complex? Are they unknowable, untouchable, undesirable or unworthy of help in our collective societal imagination?
It is clear that Aaron Alexis was very sick. He had a "pattern of misconduct" while he was at the Navy. His symptoms weren't a secret. He even went to a Veterans Affairs hospital seeking help for sleep-related issues.
There's been a lot of discussion about him slipping through the cracks and receiving security clearance, being able to enter the Naval Sea Systems Command building easily. But what concerns me is the fact that even though his behaviors raised eyebrows, he wasn't checked for mental illness.
Alexis massacred 12 people like a mad man. The surveillance video showing him armed with a shotgun prowling the building is chilling.
The question is: Can we as a society become more sensitive to black men who need help?
We can start with the book "Black Pain: It Just Looks Like We're Not Hurting" by Terrie Williams, which provides an intimate and honest exploration of the interior lives of black men. We can also encourage the media to look more closely at black men and their emotional complexities. We have to be familiar with one another's pain. Knowledge can reduce ignorance and enlighten us.
Follow us @CNNOpinion on Twitter.
Join us at Facebook/CNNOpinion.
The opinions expressed in this commentary are solely those of Michaela Angela Davis.
