Why don’t these lives matter?

What systemic environment results in these four examples of senseless killings.  

What systemic environment results in the leading cause for young black male death? 

Why do the Democrats continue to propagate the false narrative that systemic racism is the cause of all disparities?

Ella French - https://www.nbcchicago.com/news/local/who-was-officer-ella-french-what-we-know-about-the-officer-killed-in-the-line-of-duty/2585953/

Tessa Majors - https://abc7ny.com/tessa-majors-tess-murder-barnard-college/8703568/

Jaslyn Adams- https://abc7chicago.com/chicago-shooting-7-year-old-shot-homan-square-jaslyn-adams/10527570/

Pak Ho - https://amp.sacbee.com/news/nation-world/national/article249946329.html