I'm adamantly opposed to proselytizing. There are 91 different names for God in the Bible. I take that to mean that there are multiple ways of thinking of God, of connecting to His teachings. Different paths, same destination. With the advent of the Internet we've been given the gift of information at our fingertips. Telling another or even suggesting that their way of believing is wrong is to attack their identity, their very essence. There's another group who proselytize whom I find just as objectionable: Atheists. From the New Atheists to Militant Atheists.
You walk into a store and the salesperson is a different colour, a woman wearing a hijab, a young man with piercings and tattoos. You walk into a room and realize that no one looks like you. A sense of anxiety sets in from the fight/flight response to fear. That instinctual response to fear begins because we instinctively fear the unknown -- be it a place, an event, a person.