Doctor on frontline in Orlando shares heartbreaking tribute to the people he worked to save.

A blood soaked shoe.

A symbol of the horror that took place in Orlando.

A symbol of the terror, the devastation, but also a symbol of the dedicated tireless work of those on the front line who never expected a Saturday night to turn into a bloodbath.

A vigil for the victims of the Orlando shooting. Via News 13.

A Facebook post by Doctor Joshua Corsa, a senior resident at Orlando Regional Medical Center with a simple image of his shoes has gone viral.

Posted on Monday, the day after Omar Mateen opened fire on more than 200 revelers at Pulse Nightclub in Orlando, killing 49 and injuring more than 50 others it features a simple image of his new shoes.

Corsa’s heartbreaking post read:

"These are my work shoes from Saturday night. They are brand new, not even a week old," he wrote.

"On these shoes, soaked between its fibers, is the blood of 54 innocent human beings. I don't know which were gay, which were straight, which were black, or which were hispanic. What I do know is that they came to us in wave upon wave of suffering, screaming, and death."

Dr Corsa said he had forgotten about his shoes and had discarded them in the chaos of the aftermath but now looking at them says he finds hope.

"This blood, which poured out of those patients and soaked through my scrubs and shoes, will stain me forever," he wrote. "In these Rorschach patterns of red I will forever see their faces and the faces of those that gave everything they had in those dark hours."

He wrote that he planned to keep these shoes in his office as a testament to the work of hundreds of medical staff at the hospital to save lives.

"I want to see them in front of me every time I go to work”

"For on June 12, after the worst of humanity reared its evil head, I saw the best of humanity of come fighting right back. I never want to forget that night."