The worst atrocity associated with the Christian faith is the tremendous persecution suffered by my brothers and sisters in the hands of cruel intolerant people.
Our Lord and Head of the Congregation was falsely arrested, beaten and killed. His apostles and disciples taught and healed sicknesses freely, and they were also beaten and imprisoned, and the fearless Stephen was stoned to death for telling the truth.
Then began the persecution, which continued from that day to this. Jesus said that it would:
"In fact, the hour is coming when everyone who kills you will think he has offered a sacred service to God." John 16:2
In another place, Jesus said why:
“These things I command you, that you love one another. 18 If the world hates you, you know that it has hated me before it hated you. 19 If you were part of the world, the world would be fond of what is its own. Now because you are no part of the world, but I have chosen you out of the world, for this reason the world hates you. 20 Keep in mind the word I said to you: A slave is not greater than his master. If they have persecuted me, they will also persecute you; if they have observed my word, they will also observe yours. John 15:17-20