Hey Cassidy - we saw the video you made and from all of us here at the New York Yankees, we want you to know that you are not alone. We have your back! https://t.co/uuRb0ghzf1 pic.twitter.com/V2EeuJ1YmW — New York Yankees (@Yankees) April 18, 2018

The Yankees are all in standing by a young girl who used social media to detail how she's being bullied in a suburban Scranton, Pa., elementary school.

All in.

Yankees manager Aaron Boone and 23 players showed support in a video posted to Twitter on Wednesday in which they took turns holding up sheets of papers with hand-written messages.

That's how 10-year-old Cassidy Warner of Duryea, Pa. told her story in a selfie video that she put on Facebook last week without her parents' knowledge.

With Pop country duo Megan & Liz's "Are you Happy Now" playing in the background, Cassidy starts her two-minute video by holding up a sheet of paper that read, "My name is Cassidy. I am 10 years old."

Cassidy then goes through a series of sheets of paper that tell her sad story ... "I go to John Adams elementary school" .... I am in the 4th grade. I started getting bullied in 1st grade ... One day during recess a group of kids grabbed my purse off a teacher and spit on it, and me."

While never speaking at all in the video, Cassidy goes on to see that he's been threatened with her life by four bullies, who hit her, spill milk on her, call her names and tell her to kill herself. She added nobody will sit at her lunch table and that her school's principal "doesn't do anything."

The whole story is agonizing and sad.

And the Yankees' response is just as touching.

The Yankees' video begins with veteran pitcher CC Sabathia holding up a sheet of paper that reads, "Dear Cassidy. My name is CC Sabathia and I play baseball for the NY Yankees." He then turns to a second sheet that reads, "My teammates and I wanted you to know that we care about you."

A bunch of players then hold up messages one by one telling Cassidy things such as they're saving a seat for her in the clubhouse lunchroom and while they're "older" and "taller" that they "look up to her."

Both are must-see videos.

Cassidy's father, by the way, met with Scranton School District officials to try rectifying the problem.

Her parents had no idea their daughter was being bullied until seeing the video, which was taken down by Facebook - it doesn't allow anyone 13-and-under to have accounts - and then reposted by her mother.

"Once I viewed the video, it was just heartbreaking," James Warner told WNEP in Scranton. "I had no idea that my daughter was actually suffering that much pain every day."

Randy Miller may be reached at rmiller@njadvancemedia.com. Follow him on Twitter @RandyJMiller. Find NJ.com on Facebook.