If this doesn't make you go donate $20 to WikiLeaks, I don't know what will.
Go to their web site now, scroll down to the PayPal form, and reply here once you've sent them a few bucks. Put Slashdot in your donation comment, so they understand how much normal people care.
As someone that works for a blue-chip tech firm and has no connection whatsoever to them, I can tell you that I PayPal'd WikiLeaks $10 a couple weeks ago when I saw their full site was down due to lack of funds. Like others, I wondered if and when they'd come back. But after reading about the Collateral Murder release on Slashdot and Digg, I didn't think twice before sending another $100. WikiLeaks' unique ability to acquire and distribute information like this (and effectively promote it) is exactly why you should support them. Their own releases show that the US government (among others) is/was trying to bury them, but now it's going to be full-scale war -- they are sure to need your dollars more than ever. I got 5 minutes into the video before I felt sick and had to stop watching.
I truly believe the only reasonable action anyone can take to even have a chance at preventing future cover-ups like this is to send money to WikiLeaks. There is no other organization doing what they are at this level.