Re: non muslim is not a kaffir
In college my brothers told me off for calling a 'Christian' a kaffir, I didnt call him kaffir all the time, just sometimes, let me xplain why:
This boy, says he is interested about islam and wants to learn about it, we give him da'wa and he is a kinda friend of some of us. I was in the same position a year ago, a NON MUSLIM aka KAFIR who was learning with muslims, after a while I became COMPLACENT in my position, I ate with the muslims drank with the muslims took bus home with the muslims, I believed in most of the Islamic stuff, well All of it, but I did not take my shahada, IT WAS ONLY BECAUSE PEOPLE CALLED ME KAFIR THAT I REMEMBERED MY POSITION, And didnt become to complacent, this persistant rememberance of being a KAFFIR aka NON MUSLIM as such, in a sense reminded me and through that and other stuff I took my shahada!
NOW IF ONE IS A CHRISTIAN, HE SHOULD BE HONOURED TO BE CALLED A KAFIR BY MUSLIMS, IF A CHRISTIAN CALLS ME A KAFIR I WILL BE SO HAPPY, I WILL TELL HIM, PEEP MY NAME BROTHER IN ADAM, JESUS SLAVE OF GOD!!! A CHRISTIAN SHOULD REJOICE WHEN PEOPLE CALL HIM KAFIR, OR MAYBE ITS THAT CHRISTIAN'S FITRA COMING OUT REBELLING AGAINST BEING CALLED A KAFIR!
Here is a beautiful answer by Zakir Naik:
"Q. Why do Muslims abuse non-Muslims by calling them ‘Kafirs’?
A. 1. ‘Kafir’ means one who rejects.
‘Kafir’ is derived from the word ‘kufr’, which means to conceal or to reject. In Islamic terminology, ‘Kafir’ means one who conceals or rejects the truth of Islam and a person who rejects Islam is in English called a ‘non-Muslim'.
2. If non-Muslims are hurt - they should accept Islam.
If any non-Muslim considers the word ‘Kafir’ i.e. ‘non-Muslim’ as an abuse, he may choose to accept Islam and then we will stop referring to him as or call him a kafir i.e. a non-Muslim. A Muslim does not get hurt when being called a non-Hindu or non-Jew. In the same way a Hindu should not feel hurt when called a non-Muslim."
P.s also read on the word kafir and so on, it aparently was something that farmers were called because they covered the ground or something, I think Yusuf Estes talks on this word!
P.s.s the rememberence of me being a kafir was not the reason fortaking my shahada but a catalyst which made the process faster. just had to clear that up.
And Sorry if I sound harsh, I dont intend to hurt anyone, but it amazes me that people should be hurt by such a word.
Peace be upon yall
ffended:
. Instead I'll call you a follower of 'the book' (the term given in the Quran for Christians and Jews is 'Ahlal-kitab' or 'People of the Book', which is similar to what the early Christians called themselves - "people of the way"). 
btw
