The barbaric beheading of journalist James Foley by members of ISIS must bring people of good will everywhere to a moment of reckoning. The time has come when  those who claim to be true adherents of Islam must either shit or get off the pot.

Many people who – like me – advocate for understanding and tolerance of differing faiths and ideologies – find ourselves at a breaking point. Is Islam a religion of peace, or is it in reality a religion of hatred and barbarism as expressed by ISIS and other radical Islamists?

Are there Muslims anywhere who are willing to stand up and oppose them? Is there an Islamic vision of peace and brotherhood that stands up against the nightmare of forced conversions, rapes and beheadings?

The silence of the Muslim community to date is deafening. Maybe I’m not listening carefully enough, but I have not yet heard a Muslim leader strongly speak out against ISIS, or seen a group of Muslims march in opposition to these godless thugs.

I know some Muslim people, and they are good people – loving people. I refuse to believe that they are an aberration, a mutant expression of true Islam.

But honestly, that’s getting harder and harder to believe.