The same way you stop hunger, poverty, crime, wealth inequality, etcetera. Communism. Sadly, American propaganda is extremely convincing and will have the large majority of you folks believing that the term "communism" should be associated with "evil" and "lack of freedom." Now, of course, this is solely to ensure the perpetual reign* of the oligarchs which preside over us. There will always be some form of discrimination when a society is constructed on the terms of necessary inequality. Whether that be racism or classism, such is true. *(Worth to note that the realization of such reign is often purported to being something of a "New World Order" or "Illuminati" as to devalue the realization itself by associating it with obviously bullshit conspiracy theories, which in and of itself is an example of how this type of propaganda works)