Mark 11:25(NIV)
"And when you stand praying, if you hold anything against anyone, forgive them, so that your Father in heaven may forgive you your sins.”
We are charged to bless not to curse. So that our Lord God can forgive & bless us. We should do good to all men, not the ones we are closely related only. But, there are many of us who fight with the wind, we fight without bases on the Scriptures. The even qualified it more & point out that we should even pray for those who hate us & don't say something good about us. Because, God knew that Christians are hatred, having the Devil operating against God's Kingdom. The friction of the bone of contention started when the Devil was overthrown onto the Earth.
Many are we who rather fight against our enemies in prayers, but the Scripture of Mark says that if we have any difference with our neighbours, we should forgive them in prayers. Pray to God that they should have a changed mind. Because, ignorantly, the Devil can blindfold them to do what they aren't plan to do. The Christians are there to intervene for them in prayers. Our prayers can let our neighbours who have sinned against us to change and love us. When that happens, we are blessed to have our neighbours with us in Christianity. Our Lord God guides us through being hatred by our enemies. God will prevent any calamity that will happen to us. Is God who fights on our behalf not we who fight on our own. Our duties are to pray and leave everything in the hands of God.