I do not know the USA and I do not know what the injustice of blacks in the USA should be like, but in my country racism has been overcome a few years ago, of course it has one focus and the other, but it is not something alarming and the banking system is for all people of my country regardless of skin color
There are always racism and discriminations over the world, in any nations. It is only different in level of severity. Even when you think it is completely solved by laws, governments, it has always been here. There are always odds to see one person who reacts so badly per 1 million good people. But if it occurs, it will be considered as racisim or discrimination in your community population.
About the photo, I don't think it is a good way to promote Bitcoin and I believe it brings side effects, instead.