Does Presidential Candidate Bernie Sanders Have a #BlackLivesMatter Problem?

Black Lives Matter released a statement via its Facebook page saying it “does not endorse any presidential candidate. Moreover, we are not affiliated with a political party. Our work is not funded or driven by any political party nor is it influenced by local or national candidates. We will continue to hold politicians and political parties accountable for their policies and platforms. We will also continue to demand the intentional dismantling of structural racism.

Does Bernie Sanders indeed have an issue with Black Lives Matter that could cost him the Democratic presidential candidacy?