Overall, what are your thoughts on revenge and those who want revenge against other people? Do you think it's ok or a bad thing?
I'll give three examples, just in case, for three levels of severity, since there are people asking for a context to reflect on.
1. A and B are friends, but A has treated B badly; in other words, A is a toxic friend. B decides to record one of A's wrongdoings to expose A on social media.
2. C physically bullies D often, and D injures C to take revenge.
3. E murdered one of F's loved ones, so F kills E in revenge.
The first two I see often in real life. The third one is more of a hypothetical situation.