It is instructive that God incarnated as man to be brutally and ignominiously murdered. Before he drew his last breath he forgave those who transgressed against him.

When we are unjustly persecuted Jesus has asked us to love the persecutor. There is no other way to break the cycle of animosity, death and destruction if we do otherwise.

It seems too hard. I think we simply have to want to emulate Jesus in this regard. With this disposition of humility and submission to His Divine will He will grace us with the supernatural strength to love enemies as He commanded. 

Matthew 23:43–48

You have heard that it hath been said, Thou shalt love thy neighbour, and hate thy enemy. But I say to you, Love your enemies: do good to them that hate you: and pray for them that persecute and calumniate you: That you may be the children of your Father who is in heaven, who maketh his sun to rise upon the good, and bad, and raineth upon the just and the unjust. For if you love them that love you, what reward shall you have? do not even the publicans this? And if you salute your brethren only, what do you more? do not also the heathens this? Be you therefore perfect, as also your heavenly Father is perfect.