I perform a two-finger scroll on my MacBook Pro, and both the frontmost application as well as the one behind it receive the command.
It took 20 minutes for the entire group to pass by my position at Market and Van Ness.Around the 11:20 mark, a woman comes over with her Flip and asks why I'm there.
Protesters blocking Market Street in both directions at the intersection of 9th.
Quick demonstration of the Shibboleth plugin for WordPress. http://wordpress.org/extend/plugins/openid/