Jazmine Barnes was killed on Sunday near a Walmart along the east Beltway and Wallisville Road.
The shooting happened while the Barnes was inside her family's vehicle with her mother and siblings.
The news quickly spread, catching the eye of many celebrities and well-known activists, who took to their social media accounts to help find the killer.
Activists say they don't believe the shooting was a coincidence, and called on the community to take action and find the person responsible.
Journalist Shaun King and civil rights attorney Lee Merritt have come together to offer a reward for Jazmine's killer, raising the amount to $100,000 early Thursday morning.
Our reward to find the killer of 7 year old Jazmine Barnes is now $75,000.— Shaun King (@shaunking) January 3, 2019
We will not stop until we find this man and bring him to justice.
If you know ANYTHING, anything at all, email me directly @ firstname.lastname@example.org or contact @HCSOTexas & @SheriffEd_HCSO https://t.co/C11yqHUO4H
Activists are also planning to hold a Justice for Jazmine community rally in the Walmart parking lot on Saturday at noon.
Jazmine Barnes. Seven. A little girl, her small body shattered by gunfire. Her murderer will be found. Justice will also include us interrogating, challenging and transforming the climate and culture which created the murderer. https://t.co/Ew62AXyoTC— Be A King (@BerniceKing) January 2, 2019
Our reward is now $60,000.— Shaun King (@shaunking) January 2, 2019
I have filtered through hundreds of tips. Mostly garbage. All well meaning.
3-4 helpful. Working with the family and local authorities.
Some promising leads, but not nearly enough. https://t.co/uRklhaitOx
Find him! This evil monster must be stopped! https://t.co/dUUArkowcX— Gabrielle Union (@itsgabrielleu) January 2, 2019
Please help find this murderer if you can. https://t.co/aFCq71RlBS— olivia wilde (@oliviawilde) January 2, 2019
Houston Texans wide receiver Deandre Hopkins shared a photo of Jazmine on Twitter, writing that he sees his daughter in Jazmine's face and will be pledging his playoff check to help her family with funeral costs.
When I see Jazmine Barnes' face, I see my own daughter. I'm pledging my playoff check this week to help her family with funeral costs and to support @shaunking @SherriffED_HCSO @SylvesterTurner in bringing this man to justice. On Saturday, I will be playing in your honor, Jazmine pic.twitter.com/oCRYSgfGO9— Deandre Hopkins (@DeAndreHopkins) January 3, 2019
Houston activists say fatal shooting of 7-year-old girl was similar to another incident in 2017
Mom says man 'intentionally' killed 7-year-old daughter near Walmart