As you may know (and if you don’t know you are soon to find out), atheism has declared war on theism. One of their tactics is to lump all of religion together. Here is the obvious problem with such generalizations: all religions are not the same. They do not all believe the same things; they do not all act the same ways.
Religion is not even settled on whether a supreme being exists. Those who believe in a supreme being are not in agreement on who or what he is. There’s not even agreement on his nature and expectations of those he created. The god of the Muslims, for example, is quite different from the God of Christians and Jews. The Muslim God expects his followers to rid the earth of the infidels. If you can’t persuade them, kill them. If you have to kill yourself, your children, your babies to eliminate a few of them…so be it. Then again, not all Muslims would agree with this, but they are strangely silent.
Atheists delight in pointing out the horrendous acts of religious people they lump together as “Christians.” A favorite target is the Roman Catholic Church with its crusades, persecutions, executions, edicts, etc. Next on their list are the Protestants with much of the same. Not only are these vastly different from each other, but they are quite different, in varying degrees, from the primitive Christianity exposed in the New Testament. They are the results of virgin Christianity being interfered with by the likes of Calvin, Luther, Wesley, Smith, Zwingli, popes, assorted false prophets, and various televangelists.
Now, if you don’t believe that most atheists lump together all religions, especially those claiming to be Christian, just have a look at their blogs and websites.
While you’re at it, have a look at John Clayton’s article, “Atheists Declare War on Faith“