From what I've been told, a lot. Some Jewish organizations in the U.S. are of the opinion that they should keep a lot of anti-semitic attacks quiet so that more people aren't inspired to attack.
Good grief!
I am becoming more convinced over time that we are witnessing a significant resurgence of violent Islamism. And from what I have read, this is the only kind of Islam being taught these days. Their focus on violence, to me, de-legitimizes their faith, making it a cult rather than a religion, followed first by the ignorant, and next by those who desire to control the ignorant.
Now, I don't besmerch anyone for their religious beliefs, except when these beliefs call for immoral acts by followers. And of course we have been treated to an unending stream of violent acts by "Muslims" for years now. A pattern is developing, worldwide. Seems to me that, if there are Muslim faithful who desire to live in peace with their neighbors, now would be a good time to hear this, and perhaps to bring about a reformation.