A low flying and hovering quinjet isn't exactly the same as a fighter jet making a strafing run.
The problem with them is that they treat the Avengers the way people treat other dangerous/powerful things in the world, but the Avengers are not comparable to any of those other things.
Yeah they kind of are.
If oversight screw-ups keep the Avengers from acting when they need to, the world and the entire human race could literally be destroyed as a result. In other words, there is no margin for error.
Yeah, no margin of error so trusting to fate of the world to a handful of people getting to decide to do whatever they want under the mistaken belief that they can't make mistakes is reckless
But for something like the accords to be able to work without actively endangering the entire planet, it simply cannot place the Avengers directly under committee control without any say in what they do or don't get involved in. It has to take into account their experience (which is far higher than anyone else's in that regard), it has to take into account the potential loss of not using the Avengers, as well as the potential cost of using them, and it has to provide some sort of framework for what the Avengers can do to save the world if the oversight committee makes a terrible (potentially fatal) call.
Which was Stark's endgame AFTER THEY REGAIN THE WORLD'S TRUST.
To be fair, the Avengers themselves have also directly contributed to the tendency for people to see them as 'normal' operatives. It's highly questionable whether a group that powerful should even be getting involved in things like 'busting arms dealers' in the first place, and maybe in that regard, there should be a legal threshold for their involvement. That could be a part of the deal - give them the lattitude to do what needs to be done when the fate of the world is at stake, and in return they agree to stay out of matters that logically probably ought to be handled by police, unless they're specifically asked in.
Which would probably be a good compromise, a shame Cap seems to think they shouldn't so that.
Cap is certainly superhuman, but he's not invulnerable. Send enough ordinance and well trained soldiers at him where he can't run or hide then they'll eventually take him down. It'd be extremely costly though, especially if he takes the gloves off.
I doubt it, he isn't bullet proof so a sniper shot to the head would take him out.
Wanda is probably the most powerful next to Vision, even more than Thor and Hulk. Her abilities were granted by an infinity stone and those things have been known to grant the power to mow down whole civilizations. Her weakness is her inexperience, she hasn't yet realised her full potential and when she does...well let's just say I wouldn't be shocked if Marvel use her as their alternate version of the Phoenix. Right now though, yeah, she's vulnerably human, but pushed to an extreme...who knows? Just remember that when she felt her brother die, she disintegrated everything around her then went and tor apart vibranium *with her mind*. That's demonstrably stronger than Mjolnir.
And again not sniper proof.
Also note they had the raft all ready to go. What else were they going to use that for besides dealing with non-compliance?
Super villains aka the other reason people are are likely having trust issues with superhumans.
Now, having said that -- the particular actions of the U.N. task force the legitimately-elected democratic governments set up for the Avengers to exercise executive authority through was, itself, engaging in egregious violations of human rights -- vis a vis, their decision to condemn Bucky to death without a trial or due process of law.
That was becuase they were trying to apprehend a notorious uber assassin with Captain America like
abilities, lets not forget how many SHIELD agents he effortlessly took out in Winter Solider. When a guy can wipe out a SWAT team solo I can forgive the cops for deciding lethal force is necessary.
Cap was absolutely right to thwart this, and to continue to protect Bucky after his escape was triggered; the U.N. task force was out to commit murder.
Except they weren't trying to actively kill him anymore after he was taken into custody. In fact Ross wanted him returned alive when he sent Stark after them.
Meanwhile, Agents of SHIELD seems to be implying that the Accords may also require superpowered individuals to register with their national governments. If that is the case, that is a much more troubling law from a civil rights/civil liberties standpoint.
Which is kind of hypocritical of SHIELD to poo poo after using the index for years. Especially since the only thing that could have happened recently enough to change Coulson's position on it was Jiaying's looking for any excuse to start a war with SHIELD as part of her wipe out the humans plan.
Cap would have had a much stronger argument against the Accords if he had framed it as, these people want to put everyone with powers on a list, and they want to commit murder with no regard for human rights or due process of law. "Tony, they want to put us on a 'list.' It wasn't that long ago for me that I got to see what happens when governments put people on 'lists."
1) Again SHIELD \and its Index.
2) That wasn't a requirement in the film, and the TV version is unlikely to affect the films.
3) Again if a guy is known to take out entire SWAT teams effortlessly I can understand the cops not wanting to die so they take the gloves off. Seriously Bucky is an uber death commando that from the sounds of it everyone thought couldn't be turned off, not Trayvon Martin.
Captain America's Avengers refuse to be Registered.
Then he retires. That was the other option.