Ever since I first heard about Captain America: Civil War, I’ve been solidly on Team Cap’s anti-registration side. For those who aren’t nerds, here’s the basic plot: after the events of previous movies where all these superpowered humans wreak havoc on the world, governments of the world (mostly the U.S.) want to register those with superpowers so they can provide some oversight to their activities. Iron Man is pro-registration, which makes sense given that the last Avengers movie villain was literally his creation and he feels guilty about it. Captain America leads the anti-registration side, which culminates the direction of his character throughout The Winter Soldier and Age of Ultron but in this case will be sparked by defending his friend Bucky. The majority of the characters in the Marvel Cinematic Universe (except Thor and Hulk who get a movie later) line up on one side or the other.
I had a lightbulb moment watching this video from The Mary Sue, though, that made it harder for me to think Cap is clearly in the right: