Today is the 9th Annual Transgender Day of Remembrance. This day memorializes those who have been killed due to anti-transgender hatred, whether the victims were transgender themselves or perceived to be.
Julie Serano has an amazing post on the subject up at Feministing, which I encourage you to read. According to the most recent statistics (both pdf) that I could find, there is more than one murder motivated by trans hatred each month. This is most likely a conservative estimate, because many of these crimes are not reported or listed as hate crimes. And it was just reported yesterday that U.S. hate crimes rates went up in 2006, but not every all counties report these numbers, and hate crimes based on gender identity may or may not be included in the statistics for hate crimes based on sexual orientation. Gender identity and sexual orientation should be two separate categories of hate crime, but the two are often conflated and sometimes gender identity is not considered at all. Only seven state and the District of Columbia have hate crime legislation that includes gender identity or expression.
Here is a list of 2007 Transgender Day of Remembrance events, from all over the world. Consider attending one if you can.