https://www.thoughtco.com/racism-vs-prejudice-3026086
Race scholars Howard Winant and Michael Omi define racism as a way of representing or describing race that “creates or reproduces structures of domination based on essentialist categories of race.” In other words, racism results in an unequal distribution of power on the basis of race. Because of this, using the n-word does not simply signal prejudice. Rather, it reflects and reproduces an unjust hierarchy of racial categories that negatively impacts the life chances of people of color.
The Oxford English dictionary defines prejudice as a “preconceived opinion that is not based on reason or actual experience,” and this resonates with how sociologists understand the term. Quite simply, it is a pre-judgement that one makes of another that is not rooted in their own experience. Some prejudices are positive while others are negative.
Some are racial in nature, and have racist outcomes, but not all forms of prejudice do, and this is why it's important to understand the difference between prejudice and racism.
As dag said, he never heard of a short person being held against his will and forced to work for nothing simply because he was short. Nor do we hear of people who are excluded from college, disqualified from loans, paid lower wages, forced to the back of the bus or beaten by a cop who hated them simply because they were short.
The video also conflated prejudice which is an artificial preconceived notion that is absent of facts with natural talents that are real and part of what a person is born with or they develop. Being smart is a desired trait in many professions and people earn more because they can do more or do better work because of a talent. Sex appeal is the same. Who can say why but we all notice and respond positively to people we are attracted to.
Privilege is unearned advantage bestowed upon a person without any particular reason. Wealth, being born to a class or race, being born a US citizen are privileges or entitlements that can basically be described as winning the genetic lottery.
Nobody says life should be fair or that everybody IS equal in all ways. What protests like the NFL players made is not to say life has to be fair, just that everybody should be treated with respect, especially by the people we give license to carry and use deadly force in the name of public service.