A clip from I Am Jazz shows Jennings' scary encounter with online haters
Credit: Noam Galai/WireImage

Jazz Jennings is used to her life being an open book – especially on the Internet.

“I’m pretty sure everything there is to know about me has been written online,” says the transgender teen on Wednesday’s episode of I Am Jazz.

But for 14-year-old Jazz, the online world can be a very scary, even life-threatening, place.

In the clip, Jazz and her brothers Sander and Griffen gather around the computer and check out the comments on some of the reality star’s videos.

The comments start out hurtful and ignorant, with anonymous posters making claims like “transgender was something made up,” but soon turn violent.

“Someone please shoot it, if not I’m going to kill it myself and make it die a horrible, painful death,” one commenter writes.

“Is ‘it’ referring to you?” Sanders asks in disbelief.

“I didn’t think anybody could be so cruel,” Griffen says to the camera during an interview.

Later on in the episode, the death threats cause Jazz’s mom Jeanette to wonder if the family has acted in her daughter’s best interest by sharing her story with the world.

RELATED VIDEO: Jazz Jennings’ Inspiring Message for LGBT Teens

I Am Jazz

airs Wednesdays (10 p.m. ET) on TLC.