A compromise is a way to end an argument; you agree to win the argument and get what you wanted, but in the cost of your opponent getting something you had.
Some justice and not full justice is compromise. If you buy a new car, you're not pleased if you just get some of it when you paid for the rest of it. If you buy a house, you're not pleased to get some of it, when the rest of it is missing and you paid for all of it. Justice is the same way, they'll try and give a family some justice instead of all of it when their unarmed family member is killed, then try and call it a win- win for everybody. It wasn't a win-win for George Floyd.
There's no good reason to accept a compromise with justice, since that's not truejustice. They're still getting what they want when people compromise with them.