Can we compare Christianity 600 years ago to Islam right now and see which one is worse? I mean, Islam is 600 years younger than Christianity right? So, in 600 years, one would hope they just oppressing gays and fighting science, not beheading people right?
A common fallacy that somehow Islam requires some similar evolution/reformation to Christianity,
The whole world today including Muslims has access to information, criticisms, and opposing ideas that religions 600 years ago did not have, thanks to the easy access for most like modern libraries, book stores, universities, etc. and of course the internet making any excuse of ignorance that had merit back then non-sequitur today.
Another fallacy is "but the christian did it or this religion was worse" which carries as much weight as it's OK to be bad because your older brother was worse.
These things below and other similar things is why the western world is ahead and if it loses them it will fall behind,
they should be the litmus test of progress and basis for judging a society, not what the christian, Jew, Hindu, pastafarian, scientoligist, etc. did or does not do in the past or present.
Separation of religion from state
The state doesn't tell you how are what to believe or give favoritism to one religious group over another and likewise you cannot force your beliefs on others and if someone wants to leave your religion or become an atheist or start their own they are free to do so, if you refuse to take them back or shun them that is your right but you cannot force them or threaten them or their families and friends.
Freedom of speech,
No blasphemy/hate speech laws, you can freely criticize religion, write a controversial book, or simply draw a funny cartoon and likewise must accept criticism of your religion or lack of without resorting to violence.
Blaming some cartoon or film for provoking violence is no different than blaming what a women wears for provoking rape, both are ignorant and belong in the history books not in modern society.
Women are equal to men, women can marry who they want, have access to the same education, wear what they want, be treated equally under the law, and if the men don't like it too bad.
Rule of secular law is paramount and applies equally to all male and female alike, no religious courts like Sharia or other such nonsense.