The report says that the retail giant is removing the items, which are sold by third-party sellers, "indefinitely" in response to "concern" from employees and customers who didn't like the meaning behind the motto.
"However, as we listened, we came to understand that the way some, but not all, people are using the phrase 'All Lives Matter' in the current environment intentionally minimized the focus on the painful reality of racial inequity," it continued.
CNN reported that social justice warriors on social media accused Walmart of mocking the "Black Lives Matter" movement by selling merchandise with phrases such as "Blue Lives Matter" and "Irish Lives Matter" on them.
"Blue Lives Matter" t-shirts were still being offered on the company's website as of Thursday.