That is what Ms Obama needs to ask herself.
You think they care? When Obummer was President, he was inflaming hatred and falsehoods about police targeting blacks to kill them, and suddenly police being killed and assassinated because obummer would flop his lips 10 minutes after a story from CNN would come out saying "A unarmed black man was shot by a white officer 5 minutes ago. Tyrone, an unarmed black man, who din do nuthin what shot by a white officer, officer tom, who is white. White officer Tom, who is caucausian, is on paid leave while the 18yr old black CHILD Tyrone, (showing a picture of him when he was 8 years old) who after 10 felony convictions and previous armed robberies, said he was just turning his life around and just accepted on the basketball team is dead."
Obummer - "We need to hold the police accountable. It's scary how often this is happening. Somebody needs to do something!"
Yup, at every opportunity, Obummer was tagteaming with CNN and similar to create false narratives and stir hate and cause violence towards police. The reason it's calmed down so much is because Trump isn't doing that crap.