I assume you are reffering to 2:191

And kill them wherever you find them, and turn them out from where they have turned you out

Have you read what is right before that? It says " Fight in the name of God against those who fight you and do not commit aggression" (2:190)

It is referring to Quraysh , who would torture and kill monothiests for preaching their religion ( including Christians). Are you gonna tell me us we are wrong for defending ourselves?

Prophet Muhammad vowed to protect Christians in a letter to St.Catherine;

“This is a message from Muhammad ibn Abdullah, as a covenant to those who adopt Christianity, near and far, we are with them. Verily I, the servants, the helpers, and my followers defend them, because Christians are my citizens; and by Allah! I hold out against anything that displeases them. No compulsion is to be on them. Neither are their judges to be removed from their jobs nor their monks from their monasteries. No one is to destroy a house of their religion, to damage it, or to carry anything from it to the Muslims’ houses. Should anyone take any of these, he would spoil God’s covenant and disobey His Prophet. Verily, they are my allies and have my secure charter against all that they hate. No one is to force them to travel or to oblige them to fight. The Muslims are to fight for them. If a female Christian is married to a Muslim, it is not to take place without her approval. She is not to be prevented from visiting her church to pray. Their churches are to be respected. They are neither to be prevented from repairing them nor the sacredness of their covenants. No one of the nation (Muslims) is to disobey the covenant till the Last Day (end of the world).”