The "first they came for" premise of this video from Michelle Malkin is absolutely correct. Here's Roger L. Simon, last summer:

I have written frequently on here about the curious silence of my Hollywood colleagues about the assassination (for his art) of their fellow filmmaker Theo Van Gogh by an Islamist psychokiller. I'm not sure if it's willful ignorance or just plain ignorance, but the crime has been persistently ignored by the film community, as if it never happened. No mention is made in today's Variety either of the trial of the murderer Mohammed Bouyeri who, this morning in Amsterdam, was sentenced to life without parole. Perhaps I am being hasty and something will appear tomorrow, but I doubt it.

Historical parallels are obvious, as Roger made clear yesterday:

...this is no joke. We're already living in a rerun of the Middle Ages with religious-motivated hordes streaming through the streets, loaded for bear and screaming for the end of democracy. Only back in the Middle Ages people had an excuse. Most back then thought the world was flat. What do we do now? Many still think the way to deal with these lunatics is to apologize for these obscure cartoons, say "nice doggy," pat them on the head and hope they will go away. Similar techniques were tried in the 1930s when there were nowhere near as many Nazis as there are followers of radical Islam today (no matter how you count them) . Frightening thought that, isn't it?

As Austin Bay (via Glenn) said earlier,

The imagination is a battlefield.