You are not making a 'fair comparison,' since you are comparing everything every Christian group has ever done with what the Muslims are doing now, and inferring from that that none of us have a right to complain that such things are done now.
And you are responding to ME here. I have to go back quite a few generations in my family to find people who liked beheading (or executing in other ways). I am not thinking it's a 'good thing.' Quite the opposite. What I AM saying is that no matter what other theists may have done, or still do, it is still appropriate for theists to point out things that are wrong, and it is still not only illogical but useless to insist that only those with impeccable backgrounds, associations and ancestry can protest wrongness. For one thing, that leaves you right out, doesn't it?
Along with every other living human?