It's such a small percentage of people. If you poll self-identified white liberals, racial justice is unlikely to make the top 5 issues for well over 90% of them. Climate change, abortion, democracy, healthcare, student loans, etc are going to be way more important. Why? Because people naturally prioritize the issues that most impact them. I would also argue more has been done to address concerns of criminal injustice since BLM took off than most other issues. Police officers are now wearing body cameras and as a result some officers have been held to account. There was a new crime bill passed. Absolutely nothing significant has been taken on many of these other issues. The gun control bill was a joke, abortion is being restricted, they lowered the price of a few drugs, and obviously the student loan thing was botched.