Maybe for you, but I refuse to think of humans as cattle or chattel. Evolving from those ideals require a little bit more sophistication from what you portray.
Step up or step out. Your choice.
The expression, "you can lead a horse to water but you can't make it drink," implies nothing about human similarity or dissimilarity to animals.
What it means is that you can offer opportunities but you can't force others (human or animal) to take advantage of those opportunities.
E.g. you can publish really good online information and you will still get people who prefer to debate about the quality of the information instead of making use of it.
In the case of this thread, there was an opportunity to discuss what Trump and Cummings meant by calling the other racist, but that opportunity was forsaken.
Apparently, people would rather engage in partisan bickering that averts real discussion about an issue, in this case what racism means to different people when they apply the term.