People have attacked Christianity ever since Jesus the Christ was born. It has survived the Romans who routinely put people to death for not renouncing Christ as their Savior. Much later radical Islamists led by Mohammed tried to take over the world and set upon a systematic path to totally eliminate all Christians on earth by killing them if they did not convert to Islam. To counteract this extinction, Christians rose up to defend their Messiah and thus the crusades started. Christianity was restored. Since then, radical Islam has grown and has forcefully overtaken many more countries by force.
Now a new method is on its way to overtaking countries such as France and England. Some estimates show that by between 2015 and 2030 the voting citizens will reach a 51% of them having Islam as their religion. At that time Islam will rule France. See, the birth rate for the French people is low and the Muslim immigrant families are having 5 to 10 children each.
In the United States, Christianity has been attacked by communists and Marxists through the ACLU. They are trying to completely eliminate the 10 commandments, displays of Christmas and Easter, and are even trying to remove In God We Trust from our currency.
They have successfully removed prayer (Christian prayer, that is, as Islamic worship rooms have been built in many public schools with our tax dollars) and completely eliminated any attempt to include Christian history and the fact that the United States was founded on the Bible and the Gospel of Jesus Christ.
Now a more subtle method is being used to eliminate another Christian stronghold. CE and BCE are now taking over our AD and BC dates. See this article in ISRAEL.JPOST.COM.
The article says part of a wall in Jerusalem was found that were built during the second wall in 66 CE.
The CE, according to Wikipedia is:
“Common Era (also known as Christian Era and Current Era;  abbreviated CE) is a designation for the period of time beginning with year 1 of the proleptic Gregorian calendar. An earlier date is then designated BCE, described as “Before the Common“, “Christian“, or “Current Era“. The numbering of years is identical to the numbering in the Anno Domini system, neither system using a year zero”
Note that the First Definition is Common Era and a side note that it is also referred to the Christian Era and Current Era.
I predict if political correctness continues to run amok in the next 5 or 10 years Wikipedia will have removed all references to “Christian”, even though the present calendar is based on the Birth of Jesus Christ as its central point and everyone will be referring to CE and BCE.
I encourage every Christian fight this wherever you find it; call, write letters and send email to defeat these extreme liberal Marxist and radical Islamist attempts to wipe out all public references to Christianity.