You reflect that beings are free to choose their actions, and you’re in no position to guarantee that everyone will choose to be skillful. Not even the Buddha could do that. So you keep your focus on training your own mind.
"So when you extend thoughts of goodwill [mettā] to others, you’re not thinking, “May you be happy doing whatever you’re doing.” You’re thinking, “May you understand the causes for true happiness and be willing and able to act on them.” This is an attitude you can extend to all beings, without hypocrisy, regardless of how they’ve behaved in the past. Now, in some cases — where people have been particularly cruel — this may be difficult. You might feel that justice requires that they suffer first before they change their ways. But you have to remind yourself that people rarely see the connection between their misbehavior and their suffering, so wishing for them to suffer — even when it seems to serve the cause of justice — would rarely foster the causes for true happiness in the world. It’s better to wish that people come to their senses and have a change of heart on their own, and that you’d be willing to aid them in that process in whatever way you can. After all, wouldn’t you...