Captain America. The quintessential all-American hero. Nice Brooklyn boy willing to subject his body to medical experimentation to win the opportunity to fight for the little guy, freedom, and your grandma. Always has been. Still is even though someone else has taken up the title, the mantle, and the shield.
Steve’s thoughts on his chosen successor? “When I handed that shield over to Sam, it didn’t come with a rule book. I trust him to do what he thinks is best for our country.”
A large sector of the population, however, isn’t willing to accept the new Cap as “their” Cap despite Steve’s endorsement. Why? A questionable past? Does he booze it up with Stark? Go on shooting rampages? Run people down with his car on the sidewalk in Vegas? Sell drugs? Do drugs? Embezzle SHIELD funds? Play his music too loud? Kick puppies?
Sam Wilson is daring, daring, to Cap while African American.