Definition: In this task, you are given a public comment from online platforms. You are expected to classify the comment into two classes: identity-attack and non-identity-attack. Identity attack refers to anything rude or disrespectful about someone's identity, including appearance, race, gender, and sexual orientation.
Input: Comment: What if young black men DO murder each other at astounding rates? Does that somehow excuse police killings of them?

The fact that you are even implying that it does suggests that black lives don't matter to a lot of white people, including many on these boards.
Output:
Identity-attack