They didn't just arrest them -- they arranged a HUGE PRESS CONFERENCE. A big planned media event.
Maybe they have good reason to arrest Rigas, but the media event seems like Bush's handlers trying to send a message that Bush is cracking down on Wall Street. Exactly what Clinton would have done.
All that was missing was the SWAT team. Be thankful that Janet El Reno wasn't running the show; 2 of the sons would be dead and the charcoal that used to be the family homestead would be smoulderting.