This is probably going to offend some of you, but it needs to be said: if you're white and your first reaction is to tone police minorities then you are absolutely part of the problem. You might not be racist, you might not be the ones murdering these black men and women, but you're more than happy to sit there and impede change, to sit there and enable the systemic racism we're seeing and at that point as far as I'm concerned you're no better.
You are right, and I believe what is holding back society is unconscious bias. As a white male, it would be ignorant to deny I have it, and it is uncomfortable. It should be uncomfortable. It's easy for white people to say they are anti-racist, but actions speak louder than words. White people should be quiet and amplify black voices, empathize, learn and listen.
I was brought up in a white family, lived in a part of Liverpool which is 92+% white, went to a Primary and Secondary school which over 95% of student were white, all my friends are white, work in a workplace which is over 90+ white. I have no idea what it's like to live as POC, so I'm keeping my mouth shut, listening and learning.