If it were a white group that shot a black mother in the head, you can bet it would be all over the news, and swift justice would ensue.
By the definition of a hate crime, if this was done because the mother was white, that would go to race, and yes, that would be hate crime. Trouble would be, trying to prove that was the motive.
Hate crime or not, it’s still cold-blooded murder. WHERE are the consequences for the perpetrator?