by not killing off the infidels who won't change and become Muslims
This is not required by Quran.
They have the opportunity to communicate the point of view, but anyone have the right to remain on own feeling in this area.
Many of muslims offer to non muslims to be muslims. The only reason of that is the conviction that they become the place in paradise for converting almost 1 man to Islam.
Only the knowledge of Quran and Shariah law is the way to combat the islamofobia.