I'm failing to see how there's a difference in awareness raised when one person posts something on social media who doesn't the situation (your interpretation) vs awareness raised when someone who apparently does understand the situation, does it.
If i'm being honest, I don't think anyone understands the situation.
I think black & ethnic minorities know what it's like to live with racism, I think white people know that racism is wrong, and I think an increasing portion of people are beginning to bear witness to the scale of police brutality - however that last group of people are learning this primarily through social media.
There's probably dozens of people in this thread alone who are seeing treatment of black people at the hands of police that they otherwise wouldn't have been exposed to, if it wasn't for social media.
Beyond that, nobody knows whats going to happen next, nobody knows to what extent this will reach, nobody knows when it stops - none of that seems like having an understanding of a situation to me.