I'm just interested in solutions, which is what I see BLM being about.
Ok. I disagree, I think BLM are making things worse. I think that is absolutely the intention.

The solution for me is for black and white people to unite and rise against those who create the systems that cause social division and racism. We're talking about systematic racism here. Systematic. The enemy is the system, and it's the enemy of us all.

who should be responsible then?
The people who create the systems we live in. That isn't "whites", it's the wealthy and powerful. Their actual race is a complete irrelevance.

*Shrug*? "Let's just hope it goes away, someone else's problem"
Let's imagine ong's position to be *shrug hope it goes away*. I know it's not going away. It might go away if we fought the root causes instead of just blaming each other.