You know, the whole Pussy Riot thing is much, much bigger than just a single incident. Beyond the song, beyond the performance, whether or not they were being disrespectful in a house of worship or not; beyond all of that, it is the Russian governments way of clamping down on dissent. As someone said (I forget what report it was in), it is far easier for the Russian government to jail three women musicians, make an example out of them and take the heat, then it is to control ten thousand protesters in the street. We'll see how the people of Russia react. Don't forget, the Arab Spring proved that single incidents can spark historic change.
Pussy Riot - Putin Lights Up the Fires (streaming) at The Guardian Released August 17, 2011
Send a letter to Russian authorities via Amnesty International
Sign petition at Change.org
Pussy Riot Closing Statements at n+1
Pussy Riot members sentenced to 2 years in prison at L.A. Times
Pussy Riot at Wikipedia