No, they really weren't - or at least not in any way that might lead to actionable results, like building systems that do not give cops the power to murder people without accountability. The same as all the other times the police have murdered people. It's not like this is a new thing that people are just waking up to.
Can you substantiate that, or is it just your opinion? You can justify the imposition of your opinion on everyone? (Through violent intimidation?)
like building systems that do not give cops the power to murder people without accountability
This has happened, incrementally. Can you design a system, ground-up that will work as well as the current one? I suspect that's far more likely than iterating on the current one. That's also an opinion.
Do you have statistics that show that? Are more cops charged and imprisoned after murdering unarmed people every year, or does the number of unarmed murdered people go down, at all? People who die mysteriously in custody?
https://www.washingtonpost.com/investigations/fatal-police-s...
However, the overall trend in police killings is flat.
https://mappingpoliceviolence.org/nationaltrends
Interestingly:
“White Police Officers Are Not More Likely To Shoot Minority Suspects”
https://www.npr.org/2019/07/26/745731839/new-study-says-whit...
After the George Floyd incident, everyone was in agreement that this should stop. What's happening with the violence and the vandalism is just muddying the waters. It's almost as if the purpose isn't to make things better, but to foment a race war to destabilize the USA.