ster·e·o·type [ster-ee-uh-tahyp, steer-] noun,verb, ster·e·o·typed, ster·e·o·typ·ing.
Sociology . a simplified and standardized conception or image invested with special meaning and held in common by members of a group (taken from dictionary.com).
Stereotypes often put people of color into an awkward position of needing to overcome these stereotypes and a feeling of self-consciousness that white people have the privilege of not having to worry about. A black person may feel self conscious just by having to make a choice between chicken and beef, and may simply choose the beef just because he may think he is perpetuating the stereotype mentioned in the horrible meme above.
In reality, stereotypes do appear in people of color and many are ashamed of it but really stereotypes are just a tool used by whiteness to split POC groups. It pits the non-stereotypical POC against those who exhibit the stereotype of unwanted qualities. It's all leading to the idea of assimilation and the need for POC to become more white in behavior and culture.
An example of the "Good POC vs. the BAD POC" is if you've ever heard the microaggression, "You're not like a typical ___ person" or "It's like you're not even ____" or some variation of it. It means that you exhibited qualities that they deem fit to be in their presence when they would not enjoy spending time with anyone who looks like you because they exhibit unwanted characteristics. Essentially, they're a racist.
It's a fight for assimilation and to assimilate means to be elevated and accepted by our oppressors but in reality we shouldn't be fighting against certain stereotypes but for people to embrace them as to not create this rift between groups of people. And then stand up against the oppressors together.