That's why there are things going on NOWADAYS.
The Qur'an, if i remember correctly, even encourages Muslims to attack Jews if they don't convert to Islam.
The Quran doesn't say that. Mohammed actually had a lot of respect for Christians and Jews, or People of the Book as he called them, and viewed them as friends who followed God but were led astray. Mohammed's enemies were the pagans tribes that gave the Muslim community a very difficult time. In fact, Mohammed was welcomed in Christian Ethiopia when he and his followers fled Mecca, and he eventually defeated the Meccan Pagans with the help of Christian and Jewish allies in Medina.
Not that history matters much for religion though, what matters is what people want their religion to be.