Blah, blah, blah!  Word, words words!  Prayer, prayer, prayer!
The RCC never gets beyond the 'ora' to 'labora' - ongoing action to confront racism.
It prefers the comfort of words to the conflict of action.
It would upset too many white parishioners.
When has there been any widespread catechesis in parishes to deal with racism?
The RCC's constituency is white folks. 
Black RCs are a minority & the big money doesn't come from them.
The RCC follows the money.
Wilton Gregory, though black, has hardly been noteworthy for any prophetic stance on the race issue.
From an Atlanta connection, Gregory hasn't had any serious interface with black Protestant clergy, other than ceremonial. 
In a sense, the hierarchy is using him, and he is compliant, acquiescent. 
During slavery, the RCC was notably quiet, absent because slaves weren't their constituency.
No prophetic action then nor now.
Now brown RCs are entering the equation & they more than the hierarchy may become the leading force.