It does not matter who is putting the poison out there. So when you weep, weep also for your neighbour. And when you pray, pray also for your neighbour. We cannot demand another to love. Love has to come from the heart.
Feelings are very powerful.
Feelings are also very deceiving. What we can do, is be persistent in our own struggle to follow Christ. Mankind seems to like punishing himself when he thinks he has erred. Because of this, he will naturally want to punish others when they err. And, how we see and treat ourselves is exactly how we will see and treat another.