Are you kidding? The government is the justice system. I just sat through a trial where a guy without powers murdered a guy with powers in front of two dozen witnesses and got off on self defence. Right now they're going hard after a good powered kid from my neighbourhood after he stopped a robbery because he's been protesting the fucking bullshit broken windows policing they're using robots for and they want him gone. He goes to prison, he will die. He's helped put too many people away. Hell, even I've had Steve have to bail me out of jail four times. I got an Avengers ID card and fifteen years of photos in the news where I'm right damn next to him. What do you think happens to people who don't have Captain America's number memorised? And don't even get me started on how much "oversight" the courts have, come on.