Christians can be called infidels because they don't follow your god. They call Jesus god whereas you call Allah god (although the word Allah is Arabic word for god). The same can be said for Hindus because they don't follow your god. They have their own gods.
As simple as that. Atheists however don't even believe in god.
In those days, "khawarij" was termed for those who promoted terror. Today, we call them modern word, terrorist. Similarity, back then when people didn't believe God in their individual religions, infidel was the common used due to lack of organization which now exists today, Atheism.
Infidel, the term, was taken in negative tone back then because it was sign of disrespect shown at infidel by the followers of their religion. Today, it is still same, and Atheism people + Questioners people are still offended. That's why many are arrested, Atheists and Questioners, in Muslims world due to Blasphemy Law.
In Non-Muslim, the organization such as Atheism is allowed to practice freely with no Blasphemy Law in the constitution whereas offensive words are still offensive and warrant possible arrest within the laws.
I'll take expert's opinion.
@syedali73 sir how much Islam talks about equality when a non muslim can't become president or PM of the country, i am not talking about becoming caliph. And he can't enter the Haram even one is aware of civic sense. Which was the main issue. In daily life Islam gives less status to a non muslim as compared to a muslim.
#2. If a person is muslim by birth. Howcome he becomes a non muslim as per human nature. You must've read in above posts. How would sum up this point.
Fair enough. But that doesn't give you right to comment on Islam either since you are not expert in Islam either. Therefore, you are making uninformed statement in the public platform being read by all over the world.
Given your subtle hints, bear in mind that we are talking about laws in Holy Quran, not what Muslim word practices. Just because the Muslim world practices that doesn't make it Islamically applicable within the laws of Holy Quran. If that was the case, Muslim worlds would have been progressive in term of both physically and spiritually [society]. Progressive worlds are often devoid of terrorists/criminals.
The bottom line is Muslim worlds is not exactly black and white either. Holy Quran preaches equality, adversity, and peace, but its followers are opposite given the nature of minority mistreatment in the Muslim worlds. There is roughly old saying,
"Islam is perfect, but its followers is not".
Many people to whom we've declared as non Muslims believe in oneness of God and prophet hood of Muhammad P.B.U.H. Only that they don't put on Arab culture and traditions. For example Hindus complete these conditions. Sufis have written in their books that Hindus don't commit polytheism, they just worship different attributes of God. Are you ready to accept Hindus as Muslims of different names and same meaning, synonym.
It is true Bhagavad Gita talks about Monotheism practice, ONENESS of GOD, most importantly, urging its followers to believe in UNSEEN ONE GOD. That is very important part in Bhagavad Gita.
It is different that its followers do practice polytheism, and of course, there is followers that practice Monotheism either.
Islam is Monotheism Religion, but some of its followers still resort to polytheism practice either. There will always be someone who will do the opposite of their religions preach.