Who cares if it's virtue signalling and outrage if it still leads to a good outcome? At some point awareness reaches a boiling point and change happens, maybe not as fast as it should but it happens.

Stop and frisk would not have mostly ended in New York City if people were not outraged by it. Of course ending it hasn't solved most of our problems, but it's better to have 99 problems than to have 100. Should we just sit on our hands until someone in a million years devises the utopia that is compatible with human behavior?