Is Islam today Christianity 400 (or whatever*) years ago?

(Thinking Inquisition, Crusades, “indulgences”, anti-semitism,  genocidal “missionaries”, coerced “conversions”, etc., etc., etc.)

Question prompted by this from digby, wherein she notes condemnation of the Charlie Hebdo massacre by both Hezbollah and Hamas. Can’t help wondering how many Americans will ever become aware of this fact – at odds as it is with the dominant meme (corporate media especially guilty here, but wingnuts, too? of course!).

*400 is just a rough guess (not doing research for this!), whose precision is not vital to the point, I declare.