There's a reason Vlad the Impaler became Vlad the Impaler. And the reason was not that he was an inherently evil guy. The reason was that he experienced first hand how peaceful a religion Islam is and he decided that he would have absolutely none of it.

The massacres of the past this imbecile is speaking of didn't just happen out of the blue. I also don't know if it's a good idea to bring up the past if you want to defend Islam. Just saying.