Geert Wilders' film could very, very easily get him killed. (He's already guarded around the clock.) It essentially picks up the work of Dutch filmmaker Theo van Gogh, who was murdered in 2004 by a jihadi for criticizing Islam.
"Fitna" is certainly provocative, yet it has good reason to provoke. A cancer of violence, bigotry and cruelty is metastasizing within the Islamic world.
It's fine for Muslim moderates to say they aren't part of the cancer; and that some have, in response to the film, is a positive sign. But more often, diagnosing or even observing this cancer -- in film, book or cartoon -- is dubbed "intolerant" while calls for violence, censorship and even murder are treated as understandable, if regrettable, expressions of well-deserved anger.
It's not that secular progressives support Muslim religious fanatics, but they reserve their passion and scorn for religious Christians who are neither fanatical nor inclined to use violence.
For more on Fitna, the Darwin Fish, and rollicking good times in a Turkish café, read it all.