Just another way to divide and manipulate.
The Left wants all minorities to speak their own languages. This will hinder assimilation, interaction, and a cohesive nation. Which is of course the goal of all this.
English may have originated in Europe but it is far from a "White language". Today it is an international language which is spoken all over the world by hundreds of races everywhere. By American education eliminating the need to speak coherent English, they are doing their students an irreparable disservice. If they ever wind up out of America, it will be very difficult for them to converse with anyone in the world using Ebonics, for example. Nobody anywhere can understand it except urban youth.
A major problem with this idea is that there is no formal language called Ebonics. It is pigeon English with no specific rules of grammar. If it is a language with no standard rules, then how can an essay or a writing of any kind be graded as being correct or incorrect?
Speaking slang mixed with English is common. We all do that. But when the slang is allowed to replace the English language entirely, then the ability of that person to communicate broadly and internationally will be severely diminished.