Love your enemies. What does this mean? How is it to be applied?

Jesus told us to love our enemies. What does this mean? How is it to be applied? How do you define 'enemy'? Should we let our enemies live with us? Should we let enemies be part of our church communities? How does blessed are you when you are persecuted for righteousness sake relate to all this?

King David turned a blind eye to Tamar’s rape. Absalom told her to suck it up.

When Tamar was raped, David took no action. When Dinah was raped, Jacob took no action. Both men reaped terrible consequences for their passivity. So-called Christian men who turn a blind eye to the epidemic of men abusing women will reap terrible consequences for their passivity.