I've been alluding to this issue all along. At the moment, Robert Carson, Marlon Byrd and Cory Vaughn (St. Lucie) come to mind. Last year, there was Hairston and Fred Lewis. Of course, there are several dark skinned Latinos.
I don't think the Mets exactly discriminate, but other teams (Phillies, Braves) tend to look for African Americans to sign as either draftees or free agents, so they will get them more often than we do. The Mets will make offers from time to time, but in the end will more often than not come out short.
Edited Feb-6 by AdrianMonk