Sandra Bland, a 28-year-old Black woman who was found dead in a Texas jail cell on July 13, was known as an advocate for civil rights, posting videos as part of her self-produced series on Facebook, #SandySpeaks. The nature of her death has been called into question by family, friends, and supporters; the case is currently being reviewed by multiple agencies, including the Texas Rangers and FBI.

On April 8 of this year, Bland uploaded a video of herself addressing white people directly on the controversial subject of "all lives matter," a responsive hashtag adopted by some who believe that #BlackLivesMatter fails to address national concerns of racial equality.

In the days leading up to the post, Bland had received comments from followers who took issue with her use of the phrase "Black lives matter" and her powerful response to those individuals has recently reemerged on social media networks such as Facebook and Twitter.

Facebook - facebook.com

"Yes, Black people know that all lives matter, but what I need you guys to understand is that being a black person in America is very, very hard," Bland told her viewers. "Although you all love to say, 'Oh, nobody should see race, people are the reason that racism is still alive.' Well, what kind of people are the reason?"

Bland encouraged those who uphold the "all lives matter" mantra to make posters and stand out on the sidewalk to put the message to use. She said she would gladly join that group in solidarity if they did so but would not tolerate the online comments that attempt to minimize the significance of the Black Lives Matter movement.

"Show me in American history where all lives have mattered," she added. "Show me where there has been liberty and justice for all... If all lives mattered, why would there have to be a hashtag for black lives matter? Think about that. Really think about that."