1) ICANN has nothing to do with ICE seizing domains.
2) wikileaks.org was NOT seized by ICE, in case you didn't know (their nameserver operator, everydns, terminated service due to alleged AUP breach). They should probably just run their own nameservers if it's too much for a free provider to handle.
3) DNS is hierarchical in structure, but very decentralised from a technical point of view. In fact, you might call it "P2P", since anybody can join the network and run their own resolver.
4) #dnsissexy - the average user doesn't even know it exists.
5) Not happy with something? ICANN is a community. (I'm not saying it's perfect - nothing is!).
6) Really really pissed about something? Free speech, courts, democracy.
7) Really pissed AND lazy? Use a ccTLD. I hear .ly is cool.
What are people like Sunde proposing? The PR is sensationalist and contradictory, with talk of an alternative root (where would it be located? who would control it?), and a new bittorrent-like protocol (no idea how this could even work).
Anyway, I'm standing up for the status quo. It works phenomenally well.