A call from a Muslim to Muslims

A Muslim wrote this on Internet.
“I have to admit that our current Islamic teaching creates violence and hatred toward Non-Muslims. We Muslims are the ones who need to change. We have never had a clear and strong stand against the concept of slavery or wars, to spread our religion and to subjugate others to Islam and force them to pay a humiliating tax called Jizia. We ask others to respect our religion while all the time we curse non-Muslims loudly (in Arabic) in our Friday prayers in the Mosques.
Muslims denounce terrorist attacks to look good in front of the media, but condone the Islamic terrorists and either sympathise with their cause or just keep silent. Till now our religious authorities have never issued a Fatwa to proclaim Bin Laden as an apostate, while an author, like Rushdie, was declared an apostate who should be killed according to Islamic Shariia law just for writing a book criticizing Islam.
Our religious leaders have to show a clear and very strong stand against polygamy, pedophilia, slavery, killing those who convert from Islam to other religions, beating of women by men, and declaring wars on non-Muslims to spread Islam.”
Would the moderate amongst the Muslim community take up this ‘change of attitude’ task? Would they have the courage to face the opposition from their religious leaders?